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A long glass capillary (radius R) is tak...

A long glass capillary (radius R) is taken out of liquid (surface tension S and density `rho`) in vertical position. Angle of contact everywhere is zero. Atmospheric pressure is `P_(0)`. It is observed that the capillary retains some liquid.

The length of liquid column retained in the capillary is

A

`(3 S)/(rho Rg)`

B

`(2S)/(rho Rg)`

C

`(4S)/(rho Rg)`

D

zero

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The correct Answer is:
B
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