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Bernoulli's Principle

A capillary t...

Question

A capillary tube made of glass is dipped into mercury. Then

A

Mercury rises in the capillary tube

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B

Mercury rises and flows out of the capillary tube

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C

Mercury descends in the capillary tube

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D

Mercury neither rises nor descends in the capillary tube

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Solution

The correct option is C
Mercury descends in the capillary tube

The angle of contact of mercury with glass is obtuse. So it gets depressed below the liquid level outside.

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