The energy needed in breaking of a drop of liquid of radius R into n drops of radius r is giving by (T is surface tension and p is atmospheric pressure)

1.  $\left(4{\mathrm{\pi r}}^{2}\mathrm{n}-4{\mathrm{\pi R}}^{2}\right)\mathrm{T}$

2.  $\left(4/3{\mathrm{\pi r}}^{2}\mathrm{n}-4/3{\mathrm{\pi R}}^{3}\right)\mathrm{T}$

3.  $\left(4{\mathrm{\pi R}}^{2}\mathrm{n}-4{\mathrm{\pi r}}^{2}\right)\mathrm{T}$

4.  $\left(8{\mathrm{\pi r}}^{2}\mathrm{n}-8{\mathrm{\pi R}}^{2}\right)\mathrm{T}$