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A container filled with a liquid of dens...

A container filled with a liquid of density `4p` as shown in the figure. The velocity efflux through orifice is (`rho` is density of water and g = 10 `ms^(-2)`)

A

`20` m/s

B

`10` m/s

C

`14` m/s

D

`28` m/s

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