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The radius of the bore of a capillary tu...

The radius of the bore of a capillary tube is r and the angle of contact of the liquid is `theta` . When the tube is dipped in the liquid , the radius of curvature of the meniscus of liquid rising in the tube is

A

`rcos theta`

B

`r sin theta`

C

`r/(sin theta)`

D

` r/(cos theta)`

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The correct Answer is:
D
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