A cylinder of height 20 m is completely filled with water. The velocity of eff

Discussion Forum : Mechanical Properties Of Fluids

Question -

A cylinder of height 20 m is completely filled with water. The velocity of efflux of water (in m/s) through a small hole on the side wall of the cylinder near its bottom is

Options:

A . 10

B . 20

C . 25.5

D . 5

Answer: Option B
:
B

$v = \sqrt{2 g h} = \sqrt{2 \times 10 \times 20} = 20 m / s$

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