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A cylindrical vessel contains a liquid o...

A cylindrical vessel contains a liquid of density `rho` 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

A

`sqrt(2gh)`

B

`sqrt(2(gh+(mg)/(rhoA)))`

C

`sqrt(2(gh+(mg)/(A)))`

D

`sqrt(2gh+(mg)/(A))`

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The correct Answer is:
B
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