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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 apparatus used in a ship to find out the depth of the sea underneath is called _______.

  tuning fork

  sonar

  bell jar

  Half-n-half Clue
 

2.

The _______ keeps the pressure in the middle ear the same as the outside air pressure.

  semicircular canal

  Eustachian tube

  eardrum

  Half-n-half Clue
 

3.

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

  True

  False

 

4.

Sounds are produced by musical wind-instruments when columns of air are made to vibrate.

  True

  False

 

5.

The number of sound vibrations per second is called _______.

  time period

  amplitude

  frequency

  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.

Echoes are caused by _______ of sound.

  refraction

  rarefaction

  reflection

  Half-n-half Clue
 


 
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