A hole is made at the bottom of the tank...

A hole is made at the bottom of the tank filled with water (density `=1000 kgm^(-3))`. If the total pressure at the bottom of the tank is three atmospheres (1 atmosphere `=10^(5) Nm^(-2))`, then the velocity of efflux is nearest to

`sqrt400m//s`

`sqrt200m//s`

`sqrt600m//s`

`sqrt500m//s`

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