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Water rises to a height of 20 mm in a ca...

Water rises to a height of 20 mm in a capillary. If the radius of the capillary is made one-third of its previous value, then the new value of capillary rise will be

A

`(20)/(3) mm`

B

60 mm

C

`(20)/(9) mm`

D

180 mm

Text Solution

Verified by Experts

The correct Answer is:
A
We know that the capillary rises
`h=(2 sigma cos theta)/(pqr) Rightarrow 20xx(1)/(3)=(20)/(3)mm`
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