Question

Which one of the following statements is correct?

Options

• Surface energy is potential energy per unit length

• Surface tension is work done per unit area

• Surface tension is work done per unit length

• Surface tension is work done per unit force

Answer 1

Surface tension is work done per unit area

Explanation:

The force applied per unit length or work done (or energy) per unit area of a liquid surface is known as surface tension. The amount of work done per unit area by the force is known as surface energy.