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When a capillary tube of radius r is dip...

When a capillary tube of radius `r` is dipped vertically in a liquid of surface tension T, the liquid rises to a height `h` in the tube above the level outside the tube . If the angle of contact is `theta` the density of the liquid is `rho` then the pressure difference between the points A and B is

A

` 2T r cos theta`

B

`(2Tcos theta)/r`

C

`T r cos theta`

D

`(Tcos theta )/r`

Text Solution

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The correct Answer is:
B
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