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When water rises in a capillary tube of ...

When water rises in a capillary tube of radius r to a height h, its potential energy is `U_1`. If capillary tube of radius 2r is dipped in water, then potential energy of risen water is `U_2`. Then `U_1 :U_2` will be

A

` 1:1`

B

`1:2`

C

` 2:1 `

D

`1:4 `

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The correct Answer is:
A
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