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A capillary tube of radius r is lowered ...

A capillary tube of radius `r` is lowered into water whose surface tension is `alpha` and density `d`. The liquid rises to a height. Assume that the contact angle is zero. Choose the correct statement (s):

A

Magnitude of work done by force of surface tension is `(4pialpha^2)/(dg)`

B

Magnitude of work done alone by force of surface tension is `(2piapha^2)/(dg)`

C

Potential energy required by water is `(2pialpha^2)/(dg)`

D

The amount of heat developed is `(2pialpha^2)/(dg)`

Text Solution

Verified by Experts

The correct Answer is:
B
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