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A large vessel open at the top contains a non viscous liquid of specific gravity 0.8 . If a hole is made at a depth of 5m from the free surface, the velocity of efflux is (g=10m/s2)

a
5 m/s
b
10  m/s
c
20 m/s
d
52 m/s

detailed solution

Correct option is B

v=2gh=2×10×5=10 m/s

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