7th Class Science Light Question Bank

done Light Total Questions - 112

• question_answer1)
  Surfaces used in study of reflection of light are
  A)
  Polished         done clear
  B)
  Rough done clear
  C)
  Black painted               done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer2)
  Normally a plane mirror forms
  A)
  a real image only done clear
  B)
  a virtual image only done clear
  C)
  Both real as well as virtual image done clear
  D)
  Neither real nor virtual image done clear
  View Solution play_arrow

• question_answer3)
  A parallel beam of rays falling on a concave lens
  A)
  are scattered                done clear
  B)
  remain parallel done clear
  C)
  are diverged      done clear
  D)
  are converged done clear
  View Solution play_arrow

• question_answer4)
  Shaving mirrors are
  A)
  convex mirrors done clear
  B)
  plane mirrors done clear
  C)
  concave mirrors           done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer5)
  White light breaks up into seven colours due to
  A)
  reflection         done clear
  B)
  refraction done clear
  C)
  dispersion      done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer6)
  Which of the following is used as side view mirror in vehicles?
  A)
  Plane mirror                 done clear
  B)
  Concave mirror done clear
  C)
  Convex mirror    done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer7)
  The type of lens, which is thicker in the middle and thinner at the edges and is used as magnifying glass, is called
  A)
  convex lens   done clear
  B)
  concave lens done clear
  C)
  diverging lens               done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer8)
  Lens
  A)
  refers to a magnifying glass done clear
  B)
  is a piece of transparent medium bounded by at least one spherical surface. done clear
  C)
  Both the above are correct. done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer9)
  What kind of mirror provides images of large areas and is used for security?
  A)
  A plane mirror done clear
  B)
  A concave mirror done clear
  C)
  A convex mirror           done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer10)
  If the angle between the incident ray and the normal to the plane of the mirror is \[40{}^\circ ,\] the angle between the incident ray and the reflected ray will be
  A)
   \[40{}^\circ \]                       done clear
  B)
   \[90{}^\circ \] done clear
  C)
   \[80{}^\circ \]          done clear
  D)
   \[60{}^\circ \] done clear
  View Solution play_arrow

• question_answer11)
  Which of the following can form real images?
  A)
  A plane mirror             done clear
  B)
  A convex mirror done clear
  C)
  A convex lens    done clear
  D)
  A concave lens done clear
  View Solution play_arrow

• question_answer12)
  Which of the following would you prefer to use while reading small letters found in a dictionary?
  A)
  A concave mirror         done clear
  B)
  A concave lens done clear
  C)
  A convex mirror           done clear
  D)
  A convex lens done clear
  View Solution play_arrow

• question_answer13)
  Which of the following materials cannot be used to make a lens?
  A)
  Water               done clear
  B)
  Glass done clear
  C)
  Plastic              done clear
  D)
  Clay done clear
  View Solution play_arrow

• question_answer14)
  Light is
  A)
  an electromagnetic radiation done clear
  B)
  a transverse wave done clear
  C)
  mass less done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer15)
  The speed of light is
  A)
  330 m/s                        done clear
  B)
  300,000,000 m/s done clear
  C)
  30,000 m/s                   done clear
  D)
  300,000,000 km/s done clear
  View Solution play_arrow

• question_answer16)
  Rectilinear propagation is
  A)
  mode of travelling in curved lines done clear
  B)
  mode of travelling in straight lines done clear
  C)
  ability to bend around obstacles done clear
  D)
  displaying the phenomenon of diffraction done clear
  View Solution play_arrow

• question_answer17)
  Which of the following is a reflector of light?
  A)
  Sun                              done clear
  B)
  Moon done clear
  C)
  Star                              done clear
  D)
  Filament done clear
  View Solution play_arrow

• question_answer18)
  We can see the objects only when
  A)
  reflected light reaches our eyes done clear
  B)
  the objects absorb all the light done clear
  C)
  the objects allow all the light to pass through them done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer19)
  The surfaces which cannot produce clear images are called
  A)
  rough surfaces done clear
  B)
  ideal surfaces done clear
  C)
  smooth surfaces           done clear
  D)
  curved surfaces done clear
  View Solution play_arrow

• question_answer20)
  In order to be used as mirrors, glasses are coated with
  A)
  silver     done clear
  B)
  copper done clear
  C)
  aluminium       done clear
  D)
  platinum done clear
  View Solution play_arrow

• question_answer21)
  A spherical mirror is a
  A)
  reflecting elliptical surface done clear
  B)
  reflecting spherical surface done clear
  C)
  reflecting parabolic surface done clear
  D)
  flat reflecting surface done clear
  View Solution play_arrow

• question_answer22)
  The distance between the focus and the pole of the mirror is called
  A)
  focal length      done clear
  B)
  radius of curvature done clear
  C)
  principal axis done clear
  D)
  diameter of curvature done clear
  View Solution play_arrow

• question_answer23)
  A ray of light is incident on a plane mirror at an angle of incidence of\[30{}^\circ \]. The deviation produced by the mirror is
  A)
   \[30{}^\circ \]                       done clear
  B)
   \[60{}^\circ \] done clear
  C)
   \[90{}^\circ \]                       done clear
  D)
   \[120{}^\circ \] done clear
  View Solution play_arrow

• question_answer24)
  The object or image distance is taken as positive
  A)
  if the length is measured opposite to the direction of the incident ray done clear
  B)
  if the length is measured in the direction of the incident ray done clear
  C)
  if the length is measured opposite to the direction of the refracted ray done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer25)
  A ray of light is incident on a plane mirror and the angle of incidence is\[25{}^\circ \]. What is the angle Of reflection?
  A)
   \[0{}^\circ \]                         done clear
  B)
   \[50{}^\circ \] done clear
  C)
   \[90{}^\circ \]                       done clear
  D)
   \[25{}^\circ \] done clear
  View Solution play_arrow

• question_answer26)
  An ideal mirror
  A)
  absorbs all the amount of light incident on it done clear
  B)
  refracts all the light done clear
  C)
  reflects all the light done clear
  D)
  none of the above done clear
  View Solution play_arrow

• question_answer27)
  The point where the rays from a point object meet after refraction through a lens is called the
  A)
  focus    done clear
  B)
  center of curvature       done clear
  C)
  optical centre done clear
  D)
  image point done clear
  View Solution play_arrow

• question_answer28)
  According to the laws of reflection
  A)
  angle i = angle r done clear
  B)
  sine i = sine r done clear
  C)
  sine i / sine r = constant done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer29)
  Dispersion of light is defined as
  A)
  spliting of white light into seven colours done clear
  B)
  spliting of white light into five colours done clear
  C)
  spliting of white light into six colours done clear
  D)
  spliting of white light into any number of colours done clear
  View Solution play_arrow

• question_answer30)
  On the basis of following features identify the correct option. (I) It is also known as diverging lens. (II) This lens diverges rays of light.
  A)
  Convex lens                 done clear
  B)
  Concave lens done clear
  C)
  Both (a) and (b)   done clear
  D)
  Neither (a) nor (b) done clear
  View Solution play_arrow

• question_answer31)
  The band of seven colours formed on a screen when the white light suffers dispersion is called
  A)
  solar colored band       done clear
  B)
  spectrum done clear
  C)
  sonar               done clear
  D)
  none of the above done clear
  View Solution play_arrow

• question_answer32)
  Red, orange, ____, ____, _____, indgo and violet is the order of colours in spectrum. The order of missing colours is:
  A)
  blue, green and yellow done clear
  B)
  yellow, blue and green done clear
  C)
  green, blue and yellow done clear
  D)
  yellow, green and blue done clear
  View Solution play_arrow

• question_answer33)
  The colour that deviates least during the dispersion of white light is:
  A)
  violet                            done clear
  B)
  green done clear
  C)
  red                   done clear
  D)
  orange done clear
  View Solution play_arrow

• question_answer34)
  What is the angle between the incident and reflected rays when a ray of light is incident normally on a plane mirror?
  A)
   \[90{}^\circ \]                                   done clear
  B)
   \[45{}^\circ \] done clear
  C)
   \[180{}^\circ \]                                 done clear
  D)
   \[0{}^\circ \] done clear
  View Solution play_arrow

• question_answer35)
  Spherical mirror
  A)
  refers to any curved mirror done clear
  B)
  refers to a mirror that is part of a sphere. done clear
  C)
  both the above are correct. done clear
  D)
  none of these is correct. done clear
  View Solution play_arrow

• question_answer36)
  A concave mirror
  A)
  is a type of spherical mirror whose reflecting surface is concave. done clear
  B)
  is a type of curved mirror whose reflecting surface is convex. done clear
  C)
  both the above are correct. done clear
  D)
  none of these is correct. done clear
  View Solution play_arrow

• question_answer37)
  When seen from a close distance in a plane mirror, the face image
  A)
  has same size   done clear
  B)
  is enlarged done clear
  C)
  is diminished               done clear
  D)
  is blurred done clear
  View Solution play_arrow

• question_answer38)
  When seen from a close distance in a convex mirror, the face image
  A)
  has same size               done clear
  B)
  is enlarged done clear
  C)
  is diminished               done clear
  D)
  is blurred done clear
  View Solution play_arrow

• question_answer39)
  A convex lens is thick
  A)
  At the edge                   done clear
  B)
  In the middle done clear
  C)
  Same every where       done clear
  D)
  No definite shape done clear
  View Solution play_arrow

• question_answer40)
  The image which can be obtained on a screen is called
  A)
  erect                 done clear
  B)
  real done clear
  C)
  virtual             done clear
  D)
  inverted done clear
  View Solution play_arrow

• question_answer41)
  DIRECTION: Match column-I with Column-II and select the correct answer using the code given below the columns.  

  Column - I	Column - II
  (A) Plane mirror	(p) Forms real image
  (B) Convex mirror	(q) Forms image of the same size as that of the object
  (C) Concave mirror	(r) Always forms virtual images.
  (D) Concave lens	(s) Always forms images that are virtual, erect and smaller than the object.

  A)
  A\[\to \] (p), B\[\to \] (q), C\[\to \] (r), D\[\to \] (s) done clear
  B)
  A\[\to \] (q), B\[\to \] (r), C\[\to \] (s), D\[\to \] (p) done clear
  C)
  A\[\to \] (q), B\[\to \] (r), C\[\to \] (p), D\[\to \] (s) done clear
  D)
  A\[\to \] (p), B\[\to \] (s), C\[\to \] (q), D\[\to \] (r) done clear
  View Solution play_arrow

• question_answer42)
  DIRECTION: Match column-I with Column-II and select the correct answer using the code given below the columns.

  Column - I	Column - II
  (A) Objects that have their own light	(p) Non- Luminous
  (B) Object that do not have their own light	(q) Luminous
  (C) Light ray falling on rough surface	(r) Irregular reflection
  (D) Image formation in a mirror	(s) Regular reflection

  A)
  A\[\to \] (p), B\[\to \] (s), C\[\to \] (q), D\[\to \] (r) done clear
  B)
  A\[\to \] (r), B\[\to \] (p), C\[\to \] (q), D\[\to \] (s) done clear
  C)
  A\[\to \] (p), B\[\to \] (q), C\[\to \] (r), D\[\to \] (s) done clear
  D)
  A\[\to \] (q), B\[\to \] (p), C\[\to \] (r), D\[\to \] (s) done clear
  View Solution play_arrow

• question_answer43)
  DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 One way to change the path of light is to allow it to fall I on a shiny surface. A mirror can change the path of light that falls on it. The change of direction by a mirror is called reflection of light. If you look at the surface of water taken in a plastic trough, your image will be formed which will be
  A)
  larger in size                 done clear
  B)
  smaller in size done clear
  C)
  of the same size           done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer44)
  DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 One way to change the path of light is to allow it to fall I on a shiny surface. A mirror can change the path of light that falls on it. The change of direction by a mirror is called reflection of light. An image formed by a plane mirror is
  A)
  erect done clear
  B)
  of the same size as object done clear
  C)
  both (a) and (b) done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer45)
  DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 A light ray makes an angle of reflection \[60{}^\circ ,\] when it reflects from a plane reflecting sheet. The glancing angle of reflection will be
  A)
   \[60{}^\circ \]                       done clear
  B)
   \[30{}^\circ \] done clear
  C)
   \[45{}^\circ \]                       done clear
  D)
   \[90{}^\circ \] done clear
  View Solution play_arrow

• question_answer46)
  DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 A light ray makes an angle of reflection \[60{}^\circ ,\] when it reflects from a plane reflecting sheet. The angle of incidence will be
  A)
   \[60{}^\circ \]   done clear
  B)
   \[30{}^\circ \] done clear
  C)
   \[45{}^\circ \]                       done clear
  D)
   \[90{}^\circ \] done clear
  View Solution play_arrow

• question_answer47)
  DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 A light ray makes an angle of reflection \[60{}^\circ ,\] when it reflects from a plane reflecting sheet. The angle of deviation will be
  A)
   \[60{}^\circ \]                       done clear
  B)
   \[30{}^\circ \] done clear
  C)
   \[45{}^\circ \]          done clear
  D)
   \[90{}^\circ \] done clear
  View Solution play_arrow

• question_answer48)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The white light of sun is composed of seven colours. Reason (R): When white light passes through a glass prism it splits the white light into seven colours.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer49)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The air bubble shines in water. Reason (R): Air bubble in water shines due to refraction of light.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer50)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Ladies use concave mirrors for doing make up. Reason (R): Concave mirror makes a real and diminished image of an object.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer51)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): In the side mirror of a car, the images of all objects appear smaller than the objects. Reason (R): Side mirrors are convex mirrors.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer52)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The lenses are transparent and light can pass through them. Reason (R): The surface of bell on your cycle acts as a convex lens.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer53)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. Statement 1: Virtual object can't be seen by human eye. Statement 2: Virtual object is formed by diverging rays.
  A)
  Statement (1) is correct while statement (2) is incorrect done clear
  B)
           Statement (2) is correct while statement (1) is incorrect. done clear
  C)
  Both statements are correct done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer54)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. Statement 1: A ray incident along normal to the mirror retraces its path. Statement 2: In reflection, angle of incidence is always equal to angle of reflection.
  A)
  Statement (1) is correct while statement (2) is incorrect done clear
  B)
           Statement (2) is correct while statement (1) is incorrect. done clear
  C)
  Both statements are correct done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer55)
  DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Which one of the following pictures shows a diverging lens? (A)                                   (B) (C)                   (D)  
  A)
  A                                  done clear
  B)
  B done clear
  C)
  C                     done clear
  D)
  D done clear
  View Solution play_arrow

• question_answer56)
  DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Which statement best describes the property of light waves illustrated in the diagram below?
  A)
  Some materials absorb light waves. done clear
  B)
  Some materials reflect light waves. done clear
  C)
  Light waves are refracted by some materials. done clear
  D)
  Light waves are emitted by some materials. done clear
  View Solution play_arrow

• question_answer57)
  DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Find the angle of incidence and angle of reflection from the diagram.
  A)
   \[45{}^\circ ,\,\,40{}^\circ \]                       done clear
  B)
   \[55{}^\circ ,\,\,55{}^\circ \] done clear
  C)
   \[60{}^\circ ,\,\,60{}^\circ \]                       done clear
  D)
   \[30{}^\circ ,\,\,30{}^\circ \] done clear
  View Solution play_arrow

• question_answer58)
  DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Which of the following figures correctly shows the bending of a ray of light inside the prism?
  A)
    done clear
  B)
  done clear
  C)
            done clear
  D)
    done clear
  View Solution play_arrow

• question_answer59)
  DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Find the angle between the incident ray and reflected ray.
  A)
   \[60{}^\circ \]                                   done clear
  B)
   \[90{}^\circ \] done clear
  C)
   \[80{}^\circ \]       done clear
  D)
   \[40{}^\circ \] done clear
  View Solution play_arrow

• question_answer60)
  DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Ashima looks into the mirror and sees the reflection of the picture behind her. Which of the following is the picture that is behind Ashima?
  A)
             done clear
  B)
  done clear
  C)
           done clear
  D)
  done clear
  View Solution play_arrow

• question_answer61)
  Which of the following capital English letters does not show a lateral inversion?
  A)
  A                 done clear
  B)
  B done clear
  C)
  C                                 done clear
  D)
  D done clear
  View Solution play_arrow

• question_answer62)
  The distance between a plane mirror and the image of an object placed in front of the mirror is 4 m. If now the object is moved m towards the mirror, then the distance between the object and its image in the mirror will be
  A)
  3m                               done clear
  B)
  5m done clear
  C)
  6m             done clear
  D)
  8m done clear
  View Solution play_arrow

• question_answer63)
  The mirror image of "SMART" will be
  A)
        done clear
  B)
  TAMSR done clear
  C)
  SMART                        done clear
  D)
  SMRAT done clear
  View Solution play_arrow

• question_answer64)
  The image of the teeth seen by a dentist while examining your teeth is
  A)
  erect and real   done clear
  B)
  erect and virtual done clear
  C)
  inverted and virtual      done clear
  D)
  inverted and real done clear
  View Solution play_arrow

• question_answer65)
  Skiers often wear sunglasses while they are siding because snow
  A)
  Radiates light               done clear
  B)
  absorbs light done clear
  C)
  Conducts light              done clear
  D)
  reflects light done clear
  View Solution play_arrow

• question_answer66)
  Select the one that is not true about a rainbow.
  A)
  Rainbow is always seen as a circle. done clear
  B)
  The colours in rainbow as seen by us from top to bottom are in the order, violet, indigo, blue, green, and yellow, orange, red. done clear
  C)
  The colours in rainbow as seen by us from top to bottom are in the order, red, orange, yellow, green, and blue, indigo, violet. done clear
  D)
  It can be either as in (b) or as in (c). done clear
  View Solution play_arrow

• question_answer67)
  In this type of mirror the image is formed behind the mirror and the size of image is same as the size of object. It is a
  A)
  convex mirror              done clear
  B)
  concave mirror done clear
  C)
  plane mirror      done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer68)
  Why do you see your smaller and erect image when you look at the shining surface of the bell of your bicycle?
  A)
  It acts as a convex lens done clear
  B)
  It acts as a convex mirror done clear
  C)
  It acts as a concave lens done clear
  D)
  It acts as a concave mirror done clear
  View Solution play_arrow

• question_answer69)
  The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 3 m/s and he sees in his rear view mirror a vehicle parked behind his car. The speed at which the image of vehicle appears to approach the driver will be
  A)
  2m/s                             done clear
  B)
  3 m/s done clear
  C)
  5 m/s                            done clear
  D)
  6 m/s done clear
  View Solution play_arrow

• question_answer70)
  The speed of light will be minimum while passing through
  A)
  glass        done clear
  B)
  air done clear
  C)
  water                           done clear
  D)
  vacuum done clear
  View Solution play_arrow

• question_answer71)
  An air bubble in water will be act like a
  A)
  convex mirror              done clear
  B)
  concave mirror done clear
  C)
  convex lens                  done clear
  D)
  concave lens done clear
  View Solution play_arrow

• question_answer72)
  A ball is cut into two halves. On the outer surface of one half of the ball, a shiny aluminum foil is pasted. A candle is now placed in front of this shiny surface. The image of the candle formed by the shiny surface is:
  A)
  virtual and smaller in size done clear
  B)
  real and smaller in size done clear
  C)
  virtual and bigger in size done clear
  D)
  real and bigger in size done clear
  View Solution play_arrow

• question_answer73)
  A beam of light is said to be divergent when:
  A)
  all the rays travel parallel to each other done clear
  B)
  all the rays spread from a point source of light done clear
  C)
  all the rays converge together to a single point done clear
  D)
  it travels in an irregular pattern done clear
  View Solution play_arrow

• question_answer74)
  The length of the shadow will be longest when the:
  A)
  angle between the source of light and the object is \[45{}^\circ \] done clear
  B)
  source of light and the object are parallel to each other done clear
  C)
  source of light and the object are perpendicular to each other done clear
  D)
  angle between the source of light and the object is \[60{}^\circ .\] done clear
  View Solution play_arrow

• question_answer75)
  Which of the following is true regarding convex lens?
  A)
  It forms a magnified image wherever the object is place done clear
  B)
  It forms a magnified image only when the object is very close done clear
  C)
  It always forms diminished and erect images done clear
  D)
  It is not made of a transparent material done clear
  View Solution play_arrow

• question_answer76)
  Plane mirrors are arranged parallel to each other to get:
  A)
  a single image done clear
  B)
  two images done clear
  C)
  a large number of reflected images done clear
  D)
  no image done clear
  View Solution play_arrow

• question_answer77)
  A reflecting surface is curved inwards the mirror is:
  A)
  concave      done clear
  B)
  convex done clear
  C)
  plane                            done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer78)
  Which of the following produces a virtual image?
  A)
  A convex lens done clear
  B)
  Pinhole camera done clear
  C)
  A concave mirror when the object is placed at its centre of curvature done clear
  D)
  Convex mirror done clear
  View Solution play_arrow

• question_answer79)
  A prism is a piece of glass having:
  A)
  two rectangular and 3 triangular surfaces done clear
  B)
  two triangular and 3 rectangular surfaces done clear
  C)
  three triangular and 3 rectangular surfaces done clear
  D)
  none of the above done clear
  View Solution play_arrow

• question_answer80)
  The sun is seen before the actual sun rise because of
  A)
  reflection done clear
  B)
  refraction done clear
  C)
  scattering of light done clear
  D)
  rectilinear propagation of light done clear
  View Solution play_arrow

• question_answer81)
  If you can't quite see all your face in a pocket mirror, to do so you'll need to
  A)
  hold it closer    done clear
  B)
  hold it farther away done clear
  C)
  get a bigger mirror done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer82)
  An inverted image can be seen in a convex mirror,
  A)
  under no circumstances done clear
  B)
  when the object is very far from the mirror done clear
  C)
  when the object is at a distance equal to the radius of curvature of the mirror done clear
  D)
  when the distance of the object from the mirror is equal to the focal length of the mirror done clear
  View Solution play_arrow

• question_answer83)
  Dispersion of light by a glass prism takes place because of
  A)
  difference in wavelengths of the constituents of light done clear
  B)
  difference in speeds of various constituents of white light. done clear
  C)
  scattering of light by the surface of the glass prism done clear
  D)
  only b and a are correct done clear
  View Solution play_arrow

• question_answer84)
  The shape of the triangular prism
  A)
  Makes the emergent ray bend at angle to the direction of the incident ray done clear
  B)
  Angle of deviation is the angle between the incident ray produced and the emergent ray produced done clear
  C)
  Both (a) and (b) done clear
  D)
  Neither (a) nor (b) done clear
  View Solution play_arrow

• question_answer85)
  On the basis of following features identify the correct option. (I) Image formed is virtual and erect (II) Size of image formed is equal to size of object (III) The right side of the object appears as the left of its image and vice-versa.
  A)
  Concave mirror           done clear
  B)
  Convex mirror done clear
  C)
  Plane mirror      done clear
  D)
  Both (a) and (b) done clear
  View Solution play_arrow

• question_answer86)
  Which is not the property of a concave lens?
  A)
  It is thicker at the edges and tapering in the middle done clear
  B)
  It forms virtual and erect image done clear
  C)
  It forms enlarged image done clear
  D)
  It forms diminished image done clear
  View Solution play_arrow

• question_answer87)
  In nature, rainbow is formed due to the dispersion of sunlight. The optical aid responsible for it is/are:
  A)
  molecules of carbon dioxide done clear
  B)
  tiny droplets of water done clear
  C)
  molecules of nitrogen dioxide done clear
  D)
  none of the above done clear
  View Solution play_arrow

• question_answer88)
  Which of the following letters will be seen without any change in a plane mirror?
  A)
  S                                  done clear
  B)
  T done clear
  C)
  L                                  done clear
  D)
  P done clear
  View Solution play_arrow

• question_answer89)
  Plane mirrors are used in the construction of:
  A)
  Periscope        done clear
  B)
  Kaleidoscope done clear
  C)
  Telescope        done clear
  D)
  Thermo scope done clear
  View Solution play_arrow

• question_answer90)
  We use convex mirrors as side mirrors of vehicles, because
  A)
  they produce magnified images of the objects. done clear
  B)
  they produce erect images of the objects. done clear
  C)
  they can spread the images over a large area done clear
  D)
  all of the above done clear
  View Solution play_arrow

• question_answer91)
  Why a convex lens is called a converging lens?
  A)
  It bends inwards the light generally falling on it. done clear
  B)
  It converges the light generally falling on it done clear
  C)
  both the above are correct done clear
  D)
  none of these is correct done clear
  View Solution play_arrow

• question_answer92)
  DIRECTIONS: Match column-I with Column-11 and select the correct answer using the code given below the columns.

  Column - I	Column - II
  (A) Convex lens	(p) Used by dentist to see enlarged image of teeth
  (B) Convex mirror	(q) Used as a magnifying glass
  (C) Concave mirror	(r) Can form image of the object spread over a large area.
  (D) Curved mirror	(s) Common example of a spherical mirror

  A)
  A\[\to \] (p), B\[\to \] (q), C\[\to \] (r), D\[\to \] (s) done clear
  B)
  A\[\to \] (q), B\[\to \] (r), C\[\to \] (p), D\[\to \] (s) done clear
  C)
  A\[\to \] (r), B\[\to \] (s), C\[\to \] (q), D\[\to \] (p) done clear
  D)
  A\[\to \] (s), B\[\to \] (p), C\[\to \] (r), D\[\to \] (q) done clear
  View Solution play_arrow

• question_answer93)
  DIRECTIONS: Match column-I with Column-11 and select the correct answer using the code given below the columns.

  Column - I	Column - II
  (A) Virtual image	(p) Band of seven constituent colors
  (B) Headlight	(q) Dispersion
  (C) Splitting of white light	(r) Real image
  (D) Spectrum	(s) Concave mirror
  (E) Image on retina	(t) convex mirror

  A)
  A\[\to \] (s, t), B\[\to \] (q), C\[\to \] (s), D\[\to \] (p), E\[\to \] (r) done clear
  B)
  A\[\to \] (r), B\[\to \] (p), C\[\to \] (s), D\[\to \] (q), E\[\to \] (s, t) done clear
  C)
  A\[\to \] (s, t), B\[\to \] (s), C\[\to \] (q), D\[\to \] (p), E\[\to \] (r) done clear
  D)
  A\[\to \] (r), B\[\to \] (p), C\[\to \] (q), D\[\to \] (s), E\[\to \] (s, t) done clear
  View Solution play_arrow

• question_answer94)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 When a narrow beam of white light (sunlight or torch light) is passed through a triangular glass prism, it splits into a band of seven colours. The seven colours are in order violet, indigo, blue, green, yellow, orange and red. The red colour is deviated the least while the violet colour is deviated the most. The colour sequence can be remembered by the acronym VIBGYOR. Dispersion of white light into seven colours the phenomenon of splitting of white light into its component colours on passing through a refracting medium such as a glass prism is called dispersion of light. The pattern of the colored bands obtained on the screen is called spectrum. A spectrum is obtained by sending a beam of white light through a prism. A second prism exactly similar to the first one is placed in an inverted position with the sides parallel to the first. Now:
  A)
  a new spectrum will be formed on the screen with double the number of colours present in the previous spectrum done clear
  B)
  new spectrum will be obtained on the screen with only half the number of colours present in the previous spectrum done clear
  C)
  previous spectrum will disappear and we will obtain a white light formed by the fusion of the colours done clear
  D)
  a spectrum with same number of colours present in the previous spectrum will be formed but their wave lengths will be increased twice done clear
  View Solution play_arrow

• question_answer95)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 When a narrow beam of white light (sunlight or torch light) is passed through a triangular glass prism, it splits into a band of seven colours. The seven colours are in order violet, indigo, blue, green, yellow, orange and red. The red colour is deviated the least while the violet colour is deviated the most. The colour sequence can be remembered by the acronym VIBGYOR. Dispersion of white light into seven colours the phenomenon of splitting of white light into its component colours on passing through a refracting medium such as a glass prism is called dispersion of light. The pattern of the colored bands obtained on the screen is called spectrum. White light is made of:
  A)
  1 colour          done clear
  B)
  3 colours done clear
  C)
  5 colours         done clear
  D)
  7 colours done clear
  View Solution play_arrow

• question_answer96)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 When a narrow beam of white light (sunlight or torch light) is passed through a triangular glass prism, it splits into a band of seven colours. The seven colours are in order violet, indigo, blue, green, yellow, orange and red. The red colour is deviated the least while the violet colour is deviated the most. The colour sequence can be remembered by the acronym VIBGYOR. Dispersion of white light into seven colours the phenomenon of splitting of white light into its component colours on passing through a refracting medium such as a glass prism is called dispersion of light. The pattern of the colored bands obtained on the screen is called spectrum. Choose the correct statements:
  A)
  The sunlight is white done clear
  B)
  The sunlight consists of five colours done clear
  C)
  The sunlight consists of seven colours done clear
  D)
  Both (a) and (c) done clear
  View Solution play_arrow

• question_answer97)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 Take a stainless steel spoon. Bring the outer surface of the spoon near your face and look into it. Observe your image. Now observe your image using the inner side of the spoon. The image formed, when you were looking at the outer surface of the spoon by bringing this surface near your face, was
  A)
  erect                             done clear
  B)
  virtual done clear
  C)
  smaller in size              done clear
  D)
  all of these done clear
  View Solution play_arrow

• question_answer98)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 Take a stainless steel spoon. Bring the outer surface of the spoon near your face and look into it. Observe your image. Now observe your image using the inner side of the spoon. The inner surface of spoon acts like a
  A)
  concave mirror    done clear
  B)
  convex mirror done clear
  C)
  plane mirror                 done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer99)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 Take a stainless steel spoon. Bring the outer surface of the spoon near your face and look into it. Observe your image. Now observe your image using the inner side of the spoon. When the object is placed very close to the concave mirror, the image formed is
  A)
  virtual         done clear
  B)
  upside down done clear
  C)
  smaller             done clear
  D)
  all of these done clear
  View Solution play_arrow

• question_answer100)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): When we see an object, me image formed on the retina is real and inverted. Reason (R): If the magnification of a system is less than one, then the image formed is inverted.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer101)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Rainbow is an example of the dispersion of sunlight by the water droplets. Reason (R): Light of shorter wavelength is scattered much more than light of larger wavelength.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer102)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Red light travels faster in glass than green light. Reason (R): The refractive index of glass is less for red light than for green light.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer103)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Convex mirror used is street lights. Reason (R): Convex mirror diverges light over a small area than the plane mirror.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer104)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): A convex lens always forms real images for all the positions of an object. Reason (R): The convex lens converges the rays, and hence, forms real image.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer105)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): A plane mirror produces virtual, erect image for any position of the object. Reason (R): Plane mirror has finite focal length.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer106)
  DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: When an object is placed between two plane parallel mirrors, then all the images found are of equal intensity. Statement 2: In case of plane parallel mirrors, only two images are possible. Statement 3: A ray incident normal to the mirror does not retraces its path.
  A)
  Statement (1) and (3) are incorrect while statement (2) is correct. done clear
  B)
  Statement (1) and (2) are incorrect while (3) is correct. done clear
  C)
  All the statements are correct. done clear
  D)
  All the statements are incorrect. done clear
  View Solution play_arrow

• question_answer107)
  DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: In an image formed by a mirror, the left side of the object is seen as the right side in the image. Statement 2: The capital English letter 'A' does not show a lateral inversion. Statement 3: Side view mirrors of car are convex mirror.
  A)
  Statement (1) and (3) are incorrect while statement (2) is correct. done clear
  B)
  Statement (1) and (2) are incorrect while (3) is correct. done clear
  C)
  All the statements are correct. done clear
  D)
  All the statements are incorrect. done clear
  View Solution play_arrow

• question_answer108)
  DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: Two children are standing in front of a plane mirror as shown. When the child A looks into the mirror, how far away from it will image of child B appear to be?
  A)
  9m                               done clear
  B)
  18m done clear
  C)
  11m                             done clear
  D)
  16m done clear
  View Solution play_arrow

• question_answer109)
  DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in the figure. Which of the following could be inside the box?
  A)
  A rectangular glass slab done clear
  B)
  A convex lens done clear
  C)
  A concave lens done clear
  D)
  A prism done clear
  View Solution play_arrow

• question_answer110)
  DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: The diagram shows a ray of light reflected by a plane mirror. The angle between the incident ray and the reflected ray is\[80{}^\circ \]. What is the angle of incidence?
  A)
   \[40{}^\circ \]                done clear
  B)
   \[80{}^\circ \] done clear
  C)
   \[50{}^\circ \]                                   done clear
  D)
   \[100{}^\circ \] done clear
  View Solution play_arrow

• question_answer111)
  DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: Which diagram shows rays of light passing through a converging lens?
  A)
              done clear
  B)
  done clear
  C)
       done clear
  D)
  done clear
  View Solution play_arrow

• question_answer112)
  DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: An eye views an object O by reflection in a plane mirror. Which is the correct ray diagram?
  A)
      done clear
  B)
  done clear
  C)
     done clear
  D)
  done clear
  View Solution play_arrow