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QNEET-2020-Ph-724: NEET 2020 Physics - Class 11 NEET-2020-Ph-724 Solution: A capillary tube of radius r is immersed in water and water…
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in Water. The mass of water that will rise in this tube is: 5.0 g 10.0 g 20.0 g 2.5 g
Multiple Choice Options
- A 5.0 g
- B 10.0 g
- C 20.0 g
- D 2.5 g
Step-by-Step Verified Solution
The weight of water in the capillary is balanced by the surface tension force.
mg = 2 � r.T.cos _
Since constant, m is directly proportional to r.
m _ r
m 2 m 1 = r 2 r 1
m 2 5 = 2 r r
_ m 2
= 10 grams.