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A cyclindrical vessel of cross-sectional area $1000 \, \, \mathrm{cm}^2$ , is fitted with a frictionless piston of mass $10 \mathrm{~kg}$ , and filled with water completely. A small hole of crosssectional area $10 \mathrm{~mm}^2$ is opened at a point $50 \mathrm{~cm}$ deep from the lower surface of the piston. The velocity of efflux from the hole will be
Option: 1
10.5 m/s

Option: 2
3.4 m/s

Option: 3
0.8 m/s

Option: 4
0.2 m/s

Answers (1)

best_answer

$\mathrm{P_0+P_{10 \mathrm{~kg}}+h \rho g \quad=P_0+\frac{1}{2} \rho V^2}$

Posted by

himanshu.meshram

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