A person standing symmetrically between two cliffs claps
his hands and starts hearing a series of echoes at intervals
of 1 sec. If speed of sound in air is 340 m/s, the distance
between the parallel cliffs must be
(a) 340 m (b) 680 m
(c) 1020 m (d) 170 m
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Explanation:
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Answered by
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Explanation:
option d is ur answer............
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