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A capillary tube of radius r is immersed...

A capillary tube of radius r is immersed in water and water rises in to a height h. The mass of water in the capillary tube is 5g. Another capillary tube of radius 2 r is immersed in water. The mass of water that will rise in this tube is

A

2.5 g

B

5.0 g

C

10.0 g

D

20.0 g

Text Solution

Verified by Experts

The correct Answer is:
C
Force of surface tension balances the weight of water in capillary tube.
`F_s = 2pirT cos theta = mg`
Here T and `theta ` are constant . So `m prop r`
Hence `m_2/(5.0) =(2r)/r implies m_2 =10.0 g`
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