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A man is standing at a distance of 12m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.
A man is standing at a distance of 12m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.
Class 10 | ICSE | Physics | Selina | Sound
A man is standing at a distance of 12m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.

The duration of time it takes to hear the echo is

t = 2d / v

t = (2 × 12) / 340

t = 24 / 340 < 0.1 seconds

The man will not hear the echo because the feeling of a sound lasts around 0.1 second in our ears after the stimulating stimulus has stopped acting.

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