A cylindrical vessel contains a liquid of density ρ up to height h. The liquid is closed by a piston of mass m …..

Q: A cylindrical vessel contains a liquid of density ρ up to height h. The liquid is closed by a piston of mass m and area of cross section A. There is a small hole at the bottom of the vessel. The speed v with which the liquid comes out of the hole is

Numerical

(a) $ \displaystyle \sqrt{2 g h} $

(b) $ \displaystyle \sqrt{2 (g h + \frac{m g}{\rho A})} $

(c) $ \displaystyle \sqrt{2 (g h + \frac{m g}{ A})} $

(d) $ \displaystyle \sqrt{2 g h + \frac{m g}{ A}} $

Ans: (b)

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