Properties Of Matter

A water drop of radius 1 \(\mu\)m falls in a situation where the effect of buoyant force is negligible. Co-efficient of viscosity of air is 1.8 \(\times\) 10^\(-\)5 Nsm^\(-\)2 and its density is negligible as compared to that of water 10⁶ gm^\(-\)3. Terminal velocity of the water drop is :

(Take acceleration due to gravity = 10 ms^\(-\)2)