We will hear the same sound again if we shout or clap near a suitable reflecting object, such as a tall building or a mountain. This sound is referred to as:

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echo

Longitudinal waves

None of these

Reflection of Sound

answer is C.

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Detailed Solution

An echo is a repeated sound caused by sound waves being reflected back. Sound waves can bounce off smooth, hard objects in the same way that a rubber ball does.

We will hear the same sound again if we shout or clap near a suitable reflecting object, such as a tall building or a mountain. This sound we hear is known as an echo. The sensation of sound lasts about 0.1 second in our brain. The time interval between the original sound and the reflected sound must be at least 0.1s in order to hear a distinct echo.

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