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School Physics Quiz : Sound


Answer the following questions based on sound.

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Multiple choice

Your Performance  

1.

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

  the amplitude

  an echo

  the pitch

  Half-n-half Clue
 

2.

The sound of thunder is heard 8 s after the flash of lightning. If the speed of sound in air is 330 m/s, then the cloud is at a distance of _______.

  41.2 m

  82.5 m

  1320 m

  2640 m

  Half-n-half Clue
 

3.

The part of the inner ear shaped like a snail is called the _______.

  cochlea

  eardrum

  hammer

  Half-n-half Clue
 

4.

Echoes are caused by _______ of sound.

  rarefaction

  reflection

  refraction

  Half-n-half Clue
 

5.

The number of sound vibrations per second is called _______.

  time period

  frequency

  amplitude

  Half-n-half Clue
 

6.

The lower limit of frequency that can be heard by the average human is about

  2 Hz

  20 Hz

  200 Hz

  2000 Hz

  Half-n-half Clue
 

7.

If a flash of lightning is observed in a cloud 2640 m away and the speed of sound in air is 330 m/s, then the sound of thunder will be heard _______ s after the flash of lightning.

  3

  8

  16

  24

  Half-n-half Clue
 


 
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