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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

`(2T)/r cos theta `

B

`T/(r cos theta )`

C

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

D

`T/r (cos theta )`

Text Solution

Verified by Experts

The correct Answer is:
A
` T = (rhrhog)/(2 co theta) " " :. hrhog = (2T cos theta)/r `
where `hrhog ` = the pressure difference between the two liquid surfaces in the capillary tube and the beaker.
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