A drop of a liquid, of density ρ1, falls through a medium of density σ and coefficient of viscosity. Another drop, of a liquid of density ρ2, having the same radius as that of the first drop, falls through the same medium. It is given that
ρ2 = n2 ρ ; σ = (1 - 1/n) ρ1and ρ2 >> σ
The terminal velocities (v1 and v2) of the first, and the second drops, will then be related as
