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School Physics Quiz : Sound


Answer the following questions based on sound.

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Multiple choice

Your Performance  

1.

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

  True

  False

 

2.

When sounds reach the _______ or tympanic membrane, they make it vibrate.

  cochlea

  eardrum

  hammer

  Half-n-half Clue
 

3.

Out of the following materials, the best conductor of sound is _______.

  Water

  Air

  Steel

  Half-n-half Clue
 

4.

The number of sound vibrations per second is called _______.

  frequency

  time period

  amplitude

  Half-n-half Clue
 

5.

The repetition of sound which is reflected from an object is referred to as _______.

  an echo

  the amplitude

  the pitch

  Half-n-half Clue
 

6.

Echoes are caused by _______ of sound.

  refraction

  reflection

  rarefaction

  Half-n-half Clue
 

7.

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

  5000

  1600

  330

  3 × 108

  Half-n-half Clue
 


 
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