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A long capillary tube of radius 0.2 mm i...

A long capillary tube of radius `0.2 mm` is placed vertically inside a beaker of water.
If the tube is now pushed into water so that only `5.0 cm` of its length is above the surface, then determine the angle of contact between the liquid and glass surface.

A

`cos^(-1) ""((4)/(5))`

B

`cos^(-1) ""((5)/(7))`

C

`cos^(-1)""((3)/(5))`

D

`cos^(-1)""(5/4)`

Text Solution

Verified by Experts

The correct Answer is:
B
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