A man standing between two cliffs claps his hands and starts hearing a series of echoes at intervals of 2 sec Since the speed of

Question

A man standing between two cliffs claps his hands and starts hearing a series of echoes at intervals of 2 sec Since the speed of sound in air is 340 m sec The distance between the cliffs must be 1 340 m 3 1020 m 2 680 m 4 170 m

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