When two capillary tubes of different diameters are dipped vertically, the rise of the liquid is

Options

A. zero in both the tubes.
B. same in both the tubes.
C. more in the tube of larger diameter.
D. more in the tube of smaller diameter.

Answer

D

Explanation

The rise of water in a capillary tube is
expressed as,`h=(2Tcostheta)/(rdg)`
where, h = height of the capillary rise, T = surface tension, r = radius of the capillary tube, g = gravitational acceleration and d = density of the liquid
Here, T, d and, g remain constant.
So, `hprop1/r`
The rise of water is more in the tube of smaller radius.