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Capillary Action

Water rises i...

Question

Water rises in a capillary tube to a height of $2.0$ cm. In another capillary tube whose radius is one third of it, how much the water will rise?

A

5 c m

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B

3 c m

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C

6 c m

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D

9 c m

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Solution

The correct option is C $6 c m$
As given height $= 2 c m$
Relation between heights and radii $h_{1} r_{1} = h_{2} r_{2}$
$A T Q, h_{1} = 2 c m; r_{2} = \frac{1}{3} r,$
Thus, $2 r = h_{2} \frac{1}{3} r h_{2} = 6 c m$
Hence water rise $6 c m$

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