5th Class Science Lights, Sound and Force Question Bank

done Self Test-7 Total Questions - 10

• question_answer1)
  "If there is no light, there is no sight" the given statement is:
  A)
  (a) True done clear
  B)
  (b) False done clear
  C)
  (c) Partially true done clear
  D)
  (d) Partially false done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer2)
  Consider the following statements: Statement 1: Sound is a form of energy. Statement 2: Light is a form of energy Which one of the following is correct about the above statements?
  A)
  (a) Statement 1 is true and 2 is false done clear
  B)
  (b) Statement 1 is false and 2 is true done clear
  C)
  (c) Both land 2 are true done clear
  D)
  (d) Both 1 and 2 are false done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer3)
  Find the incorrect statement about sound.
  A)
  (a) Sound needs medium to travel done clear
  B)
  (b) Sound travels fastest in gas done clear
  C)
  (c) Sound cannot travel in vacuum done clear
  D)
  (d) Sound is a mechanical wave done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer4)
  Straight line propagation of light is called:
  A)
  (a) Rectilinear propagation done clear
  B)
  (b) Curved propagation done clear
  C)
  (c) Parabolic motion done clear
  D)
  (d) All of these done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer5)
  The bouncing off light from an object in the same medium is called :
  A)
  (a) Absorption done clear
  B)
  (b) Refraction done clear
  C)
  (c) Reflection done clear
  D)
  (d) Transmission done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer6)
  Why does blowing into a wind instrument creates sound?
  A)
  (a) Blowing heats the air done clear
  B)
  (b) Blowing causes the air to vibrate done clear
  C)
  (c) Blowing cools the air done clear
  D)
  (e) All of these done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer7)
  Which one of the following reflects the light instead of refracting it?
  A)
  (a) Paper done clear
  B)
  (b) Lens done clear
  C)
  (c) Glass done clear
  D)
  (d) Shiny silver mirrors done clear
  E)
  (e) All of these done clear
  View Solution play_arrow

• question_answer8)
  A ray of light from Sun has started coming towards earth at 5 am in the morning. At what time, the same ray will reach the earth?s surface?
  A)
  (a) 5 : 10 am done clear
  B)
  (b) 5 : 08 am done clear
  C)
  (c) 5 : 30 am done clear
  D)
  (d) 6 : 00 am done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer9)
  Which one of the following statements is correct?
  A)
  (a) Light is an electromagnetic waves      done clear
  B)
  (b) Light always needs a medium to travel! done clear
  C)
  (c) White light consists of seven colors done clear
  D)
  (d) Both A and C done clear
  E)
  (e) None of these done clear
  View Solution play_arrow

• question_answer10)
  "Human can see all light waves/" the above statement is:
  A)
  (a) True done clear
  B)
  (b) False done clear
  C)
  (c) Partially true done clear
  D)
  (d) Partially false done clear
  E)
  (e) None of these done clear
  View Solution play_arrow