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Question

The persistence of sound in a closed enclosure, due to continuous reflection at the walls, even after the source has stopped producing sound known as:-


A

The persistence of hearing

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B

An echo

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C

A reverberation

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D

The water sound

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Solution

The correct option is C

A reverberation


Step 1: Explanation of correct option,

Reverberation is the phenomenon of persistence of sound in a closed enclosure, due to multiple reflections of sound from the walls, even after the source has stopped producing sound.

Step 2: Explanation for incorrect option,

  • The persistence of hearing is the effect of every sound reaching our ear remains for 0.1 s. If any other sound reaches our ear within 0.1 s the sound cannot be heard distinctly, this effect is called persistence of hearing.
  • An echo is a sound caused by the reflection of sound waves from a surface back to the listener. It is the reflection of sound, arriving at the listener some time after the direct sound.

Hence, option (C) is correct.


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