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School Physics Quiz : Sound


Answer the following questions based on sound.

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Multiple choice

Your Performance  

1.

Sound can be reflected as well as refracted.

  True

  False

 

2.

Ultrasonic vibrations are used in medicine for imaging internal organs of the human body.

  True

  False

 

3.

Echoes are caused by _______ of sound.

  reflection

  refraction

  rarefaction

  Half-n-half Clue
 

4.

Dolphins use infrasonic vibrations to locate objects and their prey.

  True

  False

 

5.

An echo from the sea-bed is received 1.50 s after an ultrasonic vibration is sent from a sonar on a ship. If the speed of sound in water is 1500 m/s, then the depth of the sea is _______.

  1000 m

  1125 m

  2250 m

  4500 m

  Half-n-half Clue
 

6.

The approximate speed of sound in air is _______ m/s.

  5000

  1600

  330

  3 × 108

  Half-n-half Clue
 

7.

The process by which sound vibrations are produced in pipes is known as _______.

  refraction

  reflection

  rarefaction

  resonance

  Half-n-half Clue
 


 
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