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A stone is dropped into a lake from a to...

A stone is dropped into a lake from a tower of 500 m height. The sound of the splash will be heard by the man after

A

21 s,

B

10 s

C

11.5 s

D

2.94 s

Text Solution

Verified by Experts

The correct Answer is:
D
According to formula ,
Time taken by the sound , `t=(2d)/(v)` , where d is distance between source and reflective force.
`thereforet=(2xx500)/(340)=2.94s`
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