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If 'M' is the mass of water that rises i...

If 'M' is the mass of water that rises in a capillary tube of radius 'r', then mass of water which will ris in a capillary tube of radius '2r' is :

A

M

B

`M/2`

C

2M

D

4M

Text Solution

Verified by Experts

The correct Answer is:
C
If `theta_(c)` is contact angle, then for equilibrium of rises water in tube, we have `T cos theta xx 2 pi r = Mg`
Hence if r is doubled, rises mass will also doubled.
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