A cylinder of height $20$ m is completely filled with water. The velocity of efflux of water (in ms $^{- 1}$ ) through a small hole on the side wall or the cylinder near its bottom is:

10

m/s

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20

m/s

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25.5

m/s

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5

m/s

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Solution

The correct option is A $20$ m/s
P.E. = K.E.
mgh = $\frac{1}{2} m v^{2}$
v = $\sqrt{2 g h} = \sqrt{2 x 10 x 20} (H e r e g = 10 m / s^{2})$
$= 20 m / s$

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A cylinder of height 20m is completely filled with water. The velocity of efflux of water (in ms−1) through a small hole on the side wall or the cylinder near its bottom is:

The correct option is A 20 m/sP.E. = K.E.mgh = 12mv2v = √2gh=√2x10x20(Hereg=10m/s2) =20m/s

A cylinder of height $20$ m is completely filled with water. The velocity of efflux of water (in ms $^{- 1}$ ) through a small hole on the side wall or the cylinder near its bottom is:

The correct option is A $20$ m/s
P.E. = K.E.
mgh = $\frac{1}{2} m v^{2}$
v = $\sqrt{2 g h} = \sqrt{2 x 10 x 20} (H e r e g = 10 m / s^{2})$
$= 20 m / s$