a stone is dropped into a well in which the level of water is h below the top of the if v is velocity of sound, find the time t after which the splash is heard?
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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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