he hears two echoes one after 1 second and the other after 2 second. If the velocity of sound in air is 330 ms^−1

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A man stands between two parallel cliffs (not in middle). When he claps his hands, he hears two echoes one after 1 second and the other after 2 second. If the velocity of sound in air is 330 ms^−1, the width of the valley is
15
Sep
A man stands between two parallel cliffs (not in middle). When he claps his hands, he hears two echoes one after 1 second and the other after 2 second. If the velocity of sound in air is 330 ms^−1, the width of the valley is A man stands between two parallel cliffs (not in middle). [...]
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Tags: A man stands between two parallel cliffs (not in middle). When he claps his hands , he hears two echoes one after 1 second and the other after 2 second. If the velocity of sound in air is 330 ms^−1 , the width of the valley is ,