A certain number of spherical drops of a liquid of radius R coalesce to form a single drop of radius R and volume V. If T is the surface tension of the liquid, then

Options

A. energy `=4VT((1)/(r)-(1)/(R))` is released
B. energy `=3VT((1)/(r)+(1)/(R))` is absorbed
C. energy `=3VT((1)/(r)-(1)/(R))` is released
D. energy is neither released nor absorbed

Answer

C