A cyclinderical vessel of cross-sectiona...

A cyclinderical vessel of cross-sectional area `1000cm^(2)`, fitted with a frictonless piston of mass `10kg`, and filled with water completely. A small hole of cross-sectional area `10mm^(2)` is opened at a point `50cm` deep from the lower surface of the piston. The velocity of efflux from the hole will be

`10.5 m//s`

`3.4 m//s`

`0.8 m//s`

`0.2 m//s`

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