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A capillary tube of radius r is lowered ...

A capillary tube of radius r is lowered into a liquid of surface tension T and density `rho`. Given angle of contact `=0^(@)`.
The work done by surface tension will be

A

`(pi T^(2))/(rho g)`

B

`(4 pi T^(2))/(rho g)`

C

`(T^(2))/(rho g)`

D

`(2T^(2))/(rho g)`

Text Solution

Verified by Experts

The correct Answer is:
B
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