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A ball of density o and radius r is drop...

A ball of density o and radius r is dropped on the surface of a liquid of density p from certain height. If speed of ball does not change even on entering in liquid and viscosity of liquid is r). then the height from which ball dropped is

A

`2g [(((sigma - rho)r)^(2))/(9eta)]`

B

`(2g (sigma - rho)^(2) r^(2))/(9eta)`

C

`(2 (sigma - rho)^(2) gr^(2))/(9eta)`

D

`2g [(9eta)/(((sigma - rho)r)^(2))]`

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