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A capillary tube of radius r is dipped i...

A capillary tube of radius r is dipped in a liquid of density `rho ` and surface tension S. if the angle of contanct is `theta`, the pressure difference between the two surface in the beaker and the capillary ?

A

`sigma/r cos theta`

B

`(2sigma)/r cos theta`

C

`sigma/(r cos theta)`

D

`(2sigma)/(r cos theta)`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaP = (2sigma cos theta)/r`
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