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Question: A cylinder of height 20 m is completely filled with water. The velocity of efflux of water (in m/s) ...

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

A

10

B

20

C

25.5

D

5

Answer

20

Explanation

Solution

v=2gh=2×10×20=20 m/sv = \sqrt { 2 g h } = \sqrt { 2 \times 10 \times 20 } = 20 \mathrm {~m} / \mathrm { s }