Q.

A capillary tube of radius ‘r’ is immersed in water and water rises in it to a height ‘h’. The mass of water in the capillary tube is 5 gram. Another capillary tube of radius 2r is immersed in water. The mass of water that will rise in this tube is (in gram)

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a

5

b

10

c

20

d

2.5

answer is C.

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Detailed Solution

w=F

mg=2πrTcosθ

mαr

r  2r

m2m

2×5=10gram

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