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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 airtight bell-jar is inverted on a platform connected to a vacuum pump. An electric bell fitted into the jar is operated but its sound cannot be heard. This is because sound cannot travel through _______.

  glass

  vacuum

  air

  Half-n-half Clue
 

2.

The process by which sound vibrations are produced in pipes is known as _______.

  resonance

  rarefaction

  reflection

  refraction

  Half-n-half Clue
 

3.

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

  1600

  330

  5000

  3 × 108

  Half-n-half Clue
 

4.

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

  Steel

  Water

  Air

  Half-n-half Clue
 

5.

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

  fundamental

  harmonic

  overtone

  Half-n-half Clue
 

6.

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

  eardrum

  Eustachian tube

  semicircular canal

  Half-n-half Clue
 

7.

The number of sound vibrations per second is called _______.

  amplitude

  time period

  frequency

  Half-n-half Clue
 


 
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