Question

A stone is dropped into a well in which the level of water is H meter below the top of the well. If v is velocity of sound in air, the tine after which the splash is heard will be given b

Answer 1

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ANSWER =>



Time taken for thw ball to reach the bottom 
= (2h/g)^1/2

Time taken by sound to reach the top 
= h/v 

Thus total time = (2h/g)^1/2 + h/v

Thus answer is B.




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