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question_answer1)
Which of the following mirrors shows lateral inversion?
A)
B)
C)
D)
Both (A) and (B) done
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question_answer2)
When a light ray is reflected repeatedly by a set of parallel plane mirrors, the intensity of the light ray decreases after some reflections. This is because of
A)
Poor reflection from mirrors done
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B)
Absorption of some amount of light by mirrors done
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C)
Dispersion of light when the rays travel through the atmosphere done
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D)
Scattering of light by the mirrors. done
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question_answer3)
If a pin is placed in front of, and to the right of a plane mirror as shown in figure, then where is the image of the pin formed?
A)
P done
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B)
Q done
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C)
R done
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D)
S done
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question_answer4)
Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena is/are responsible for this?
A)
Diffusion done
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B)
Dispersion and total internal reflection done
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C)
Only refraction done
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D)
Diffusion, refraction and total internal reflection. done
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question_answer5)
An object is placed at the centre of curvature C of a concave mirror, the image will be formed at
A)
Focus done
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B)
Infinity done
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C)
Between C and F done
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D)
Centre of curvature C. done
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question_answer6)
When the object is moved slightly closer to a converging lens, the image may
A)
Increase in size and move closer to the lens done
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B)
Increase in size and move farther away from the lens. done
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C)
Decrease in size and move closer to the lens done
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D)
Decrease in size and move farther away from the lens. done
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question_answer7)
A point object is placed in front of a plane mirror. If the object and the mirror start moving away from each other with speed v along a straight line, then speed of the image with respect to mirror is
A)
2v done
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B)
v done
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C)
5v done
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D)
6v done
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question_answer8)
Which of the following cases is/are possible for convex lens?
A)
(i) and (ii) done
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B)
(ii) and (iii) done
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C)
(iii) and (i) done
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D)
Only (i) done
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question_answer9)
A bus driver is reversing his bus at a speed\[8\text{ }m\text{ }{{s}^{-1}}\]. The rear view mirror of a bus is a plane mirror. The driver sees in his rear view mirror the image of a car parked behind his bus. The speed at which the image of the car appears to approach the driver will be
A)
\[2\text{ }m\text{ }{{s}^{-1}}\] done
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B)
\[4\text{ }m\text{ }{{s}^{-1}}\] done
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C)
\[8\text{ }m\text{ }{{s}^{-1}}\] done
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D)
\[16\text{ }m\text{ }{{s}^{-1}}\] done
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question_answer10)
Consider the following statements and select the correct option which correctly identifies true (T) and false (F).
(i) Concave mirror is used for side view mirror in vehicles. |
(ii) The image formed by a plane mirror is upright. |
(iii) When a person moves closer to a plane mirror, the size of his image in the mirror remains the same. |
(iv) In the case of reflection, virtual image of the object is formed on the same side as the object. |
A)
B)
C)
D)
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question_answer11)
Read the given statements and select the correct option.
Statement 1: When a ray of light passes from air into water, it will bent towards the normal. |
Statement 2: When light travels from air into water, its speed increases. |
A)
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done
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B)
Both statements 1 and 2 are true and statement 2 is not the correct explanation of statement 1. done
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C)
Statement 1 is true but statement 2 is false. done
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D)
Statement 1 is false but statement 2 is true. done
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question_answer12)
What is the angle of reflection in the figure shown here?
A)
\[{{35}^{o}}\] done
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B)
\[{{65}^{o}}\] done
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C)
\[{{55}^{o}}\] done
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D)
\[{{25}^{o}}\] done
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question_answer13)
What is the angle of incidence when a ray of light incident on a concave mirror from its centre of curvature?
A)
\[{{90}^{o}}\] done
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B)
\[{{60}^{o}}\] done
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C)
\[{{45}^{o}}\] done
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D)
\[{{0}^{o}}\] done
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question_answer14)
What is the angle of incidence and angle of reflection in the given figure'?
A)
\[{{360}^{o}}\] done
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B)
\[{{180}^{o}}\] done
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C)
\[{{90}^{o}}\] done
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D)
\[{{0}^{o}}\] done
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question_answer15)
If you keep red coloured marbles in a blue coloured vase made of glass then the colour of red coloured marbles will appear
A)
Blue done
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B)
Red done
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C)
Black done
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D)
White done
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question_answer16)
Read the following statements and select the correct option.
Statement 1: It is not possible to photograph a virtual image. |
Statement 2: An image is said to be virtual if the reflected or refracted rays are diverging in nature. |
A)
Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1. done
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B)
Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of statement 1. done
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C)
Statement 1 is true but statement 2 is false. done
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D)
Statement 1 is false but statement 2 is true. done
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question_answer17)
A mirage is observed when
A)
Density of air decreases with increase of height done
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B)
Density of air increases with increase of height done
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C)
Refractive index of air decreases with increase of height done
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D)
The Earth acts like a mirror, done
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question_answer18)
An object approaches a convergent lens from the left of the lens with a uniform speed \[5\text{ }m\text{ }{{s}^{-1}}\] and stops at the focus. The image
A)
Moves away from the lens with a uniform speed \[5\text{ }m\text{ }{{s}^{-1}}\] done
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B)
Moves away from the lens with a uniform acceleration done
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C)
Moves away from the lens with a non-uniform acceleration done
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D)
Moves towards the lens with a non-uniform acceleration. done
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question_answer19)
In a dark night, you have only one light source in your room. But you have two mirrors, one is concave and another is convex. Which mirror will you use to make the room lighted?
A)
Concave mirror, because it converges the beam of light. done
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B)
Concave mirror, because it diverges the beam of light. done
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C)
Convex mirror, because it diverges the beam of light. done
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D)
Either concave or convex depends on the position of source. done
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question_answer20)
In the given figure, two mirrors P and Q are situated at an angle of \[{{60}^{o}}\] with each other and a ray of light is incident on mirror P at an angle of \[{{55}^{o}}\]. What is the value of angle A if the ray again reflected by the mirror Q?
A)
\[{{35}^{o}}\] done
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B)
\[{{55}^{o}}\] done
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C)
\[{{50}^{o}}\] done
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D)
\[{{70}^{o}}\] done
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