If the surface tension of a liquid is T , the gain in surface energy for an increase in liquid surface by A is

The surface-tension of a liquid is T. The increase in its surface energy on increasing the surface area by A is........

The surface tension of a liquid is affected by

Unit .of surface tension of a liquid :

Surface tension in a liquid is due to :

Origin of surface tension of a liquid is due to

If the surface tension of a liquid is 5 N/m then the surface energy of the liquid film on a ring of area 0.15 m^(2) is