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Speed of Efflux

A water tank ...

Question

A water tank is filled with water up to a height H hole is made in the tank wall at a depth h from the aurface of water. Then the volcity of efflux

A

\sqrt{g h}

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B

\sqrt{2 g h}

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C

2 g h

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D

p g h

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Solution

The correct option is B $\sqrt{2 g h}$
Acc. to bernoulli's Theorem.
$P_{0} + ρ g H + 0 = P_{0} + 0 + \frac{1}{2} ρ v^{2}$
So, $v = \sqrt{2 g H}$
Answer: $(B) \sqrt{2 g h}$

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