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Class 11 NEET Physics Properties of Matter Questions
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© examsnet.com
Question : 19
Total: 89
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 :
[NEET-2020]
5.0 g
10.0 g
20.0 g
2.5 g
Validate
Solution:
👈: Video Solution
Force of surface tension balances the weight of water in capillary tube.
F
s
=
2
π
r
T
cos
θ
=
m
g
Here, T and θ are constant
So,
m
α
r
Hence
m
2
5.0
=
2
r
r
⇒
m
2
=
10.0
g
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