Question

c) Relation between the surface energy and
surface tension: Consider a rectangular fram​

Answer 1

Answer:

Since the area increases, some work has to be done against the inward force due to surface tension. Therefore, Hence, the surface energy per unit area of a surface is numerically equal to the surface tension

Answer 2

Answer:

This work is stored in the unit surface area in the form of potential energy. This potential energy is called the surface energy. The above relation shows that the surface energy per unit area of a liquid is equal to its surface tension.