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Water rises t...

Question

Water rises to a height of $2 c m$ in a capillary tube held vertically. When the tube is tilted $60^{o}$ from the vertical, the length of the water column in the tube will be

A

1 c m

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B

2 c m

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C

3 c m

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D

4 c m

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Solution

The correct option is D $4 c m$

Since vertical rise in capillary tube remains constant.

$l c o s 60^{0} = h$
$l = 2 h = 2 \times 2 c m = 4 c m$

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