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A body of volume V and desnity rho is in...

A body of volume V and desnity `rho` is initially submerged in a non-viscous liquid of density `sigma (gt rho)`. If it is rises by itself through a height h in the liquid. Its kinetic energy will

A

increase by h V `(sigma-rho)g`

B

increase by hV`(rho+sigma)`g

C

increase by `(hVrhog)/(sigma)`

D

decrease be `(hVrhog)/(sigma)`

Text Solution

Verified by Experts

The correct Answer is:
A
Work done by all the force W=change in kinetic energy two forces are acting, weight and upthrust.
`therefore" "W=(sigma-rho)g(h/V)`
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