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Q.

Water rises up to a height h in a capillary tube of certain diameter. This capillary tube is replaced by a similar tube of half the diameter. Now the water will rise to the height of 

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a

2h

b

3h

c

h

d

4h

answer is C.

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Detailed Solution

h1rh2h1=r1r2=D1D2=2h2=2h1

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