Question

Derive an expression for the height of liquid raised in a capillary tube dipped vertically in a liquid which wets the walls of capillary tube

Answer 1

Answer:

Explanation:

The surface on the top liquid inside the capillary tube has a trough (cup) like shape. Assume the angle of contact with the walls be Ф. Surface tension is the contact force per unit length along the circumference of top surface. This force pulls the liquid vertically upwards