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A water barrel having water upto a depth...

A water barrel having water upto a depth d is placed on a table of height h . A small hole is made on the wall of the barrel at its bottom . If the stream of water coming out of the hole falls on the ground at a horizontal distance R from the barrel, then the value of d is

A

4 h / R^2

B

4 hR^2

C

R^2/4h

D

h/4R^2

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