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Q.

The bouncing back of a sound wave is called a/an ____.


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Detailed Solution

The bouncing back of a sound wave is called an echo.
Sound waves get reflected by the source under a certain distance. Such a sound wave is possessed to have an echo. A sound wave can either reflect from a smooth or a hard object. But sound waves do not get reflected from a soft body. The soft surface absorbs the sound waves, and the echo cannot be heard. The direction of the echo is different from the direction of the original sound.
 
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