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School Physics Quiz : Sound


Answer the following questions based on sound.

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Multiple choice

Your Performance  

1.

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
 

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.

A _______ note is the lowest note obtained on blowing gently across the top of a test-tube.

  fundamental

  harmonic

  overtone

  Half-n-half Clue
 

4.

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

  sonar

  tuning fork

  bell jar

  Half-n-half Clue
 

5.

Echoes are caused by _______ of sound.

  rarefaction

  reflection

  refraction

  Half-n-half Clue
 

6.

The three little bones in the middle ear are the _______, the anvil and the stirrup.

  eardrum

  cochlea

  hammer

  Half-n-half Clue
 

7.

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

  eardrum

  hammer

  cochlea

  Half-n-half Clue
 


 
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