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A person clapped his hands near a cliff ...

A person clapped his hands near a cliff and heard the echo after 5 5. What is the distance of the cliff from the person if the speed of the sound is taken as 346 `ms^(-1)?

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ime between transmission and detection t-3.42 s Speed of ultrasound in sea water, v = 1531 `ms^(-1)`
Distance travelled by the ultrasound
= 2 `xx` depth of the sea = 2d
where, d is the depth of the sea.
2d = speed of sound`xx` time = 1531 `m s^(-1) xx 3.42 s = 5236 m`
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