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

A long capillary tube of radius 0.2mm 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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