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School Physics Quiz : Sound


Answer the following questions based on sound.

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Multiple choice

Your Performance  

1.

Echoes are caused by _______ of sound.

  rarefaction

  reflection

  refraction

  Half-n-half Clue
 

2.

Dolphins use infrasonic vibrations to locate objects and their prey.

  True

  False

 

3.

Sounds travels faster in air as compared to water.

  True

  False

 

4.

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
 

5.

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

  200 Hz

  2000 Hz

  200000 Hz

  20000 Hz

  Half-n-half Clue
 

6.

The sound of thunder is heard 9 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 _______.

  36.7 m

  73.3 m

  1485 m

  2970 m

  Half-n-half Clue
 

7.

Sound can travel through vacuum.

  True

  False

 


 
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