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The end of a capillary tube of radius r ...

The end of a capillary tube of radius r is immersed in water of surface tension T and density `rho`. How much heat will be evolved when water rises in the tube?
[Hint: Heat evolved = work done by surface tension - gravitational energy stored in the standing column.]

Text Solution

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The correct Answer is:
`(2pi T^(2))/(rhog)`
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