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Question

Repetitions of sound due to the reflection of original sound heard by a large and hard obstacle is known as:

A
Compression
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B
Rarefaction
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C
Persistence of hearing
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D
Echo
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Solution

The correct option is D Echo
If we shout or clap near a suitable reflecting object such as tall building or a mountain. We will hear the same sound again and again. This sound we hear is called echo.

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