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A vertical capillary of radius r is brou...

A vertical capillary of radius r is brought in constant with water of density `rho` and surface tension S. If the angle of contact is zero, then the amount of heat liberated while the water rises along the capillary, is

A

`(2pi S^(2))/(rhog)`

B

`(pis^(2))/(rhog)`

C

Zero

D

`(4pi S^(2))/(rhog)`

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The correct Answer is:
A
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