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Question

A cylinder containing water stands on a table of height H. A small hole is punched in the side of cylinder at its base. The stream of water strikes the ground at a horizontal distance R from the table. Then the depth of water in the cylinder is:

A
H
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B
R
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C
(RH)
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D
R2/4H
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Solution

The correct option is D R2/4H
A hole is punched at a height H of table. Let d be the depth of hole.
u: velocity at which water comes out
From toricells Law, Velocity of water ejecting out is given by:
u2=2gd(2)[d:depthofhole]
The water stream follows a Horizuntala projectile, whose range R is given by:
R=u2Hg(2)
From (1) and (2)
R=2gd.2Hgd=R24H.

1059062_828583_ans_e0a333107d5e464885c9a88037f50ad6.png

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