Radius of meniscus, R=1cm=10−2m Number of smaller droplets, n=106 Surface tension, T=435×10−3Nm−1 Work done in splitting a large drop of radius R in n smaller drops is W=T×∆A where, ∆A= increase in area and T= surface tension. ∴‌‌W=(4πR2)T⋅(n1∕3−1)