A hole is made at the bottom of a large vessel open at the top. If ...

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A hole is made at the bottom of a large vessel open at the top. If water is filled to a height \( \mathrm{h} \),
\( \mathrm{P} \) it drains out completely in time t. The time

W taken by the water column of height \( 2 \mathrm{~h} \) to drain completely is
(1) \( \mathrm{t} \sqrt{2} \)
(2) \( 2 \mathrm{t} \)
(3) \( 2 \sqrt{2} t \)
(4) \( 4 \mathrm{t} \)
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