A liquid drop having surface energy ‘ ‘ is spread into 512 droplets of same size. The final surface energy of the droplets is
A)
B)
C)
D)

Answer is (C)
The surface area of the liquid drop is
Its surface energy is
When the drop splits in 512 droplets, the surface area of each droplets is

The volume of bigger drop is and Volume of small droplets is

Change in surface area is
Surface energy (T is surface tension and is area).