A drop of water of radius 0.0015mm is falling in air. If the coefficient of viscosity of air is 2.0 × 10⁻⁵ kgm⁻¹s⁻¹, the terminal velocity of the drop will be: (The density of water
1.0 × 10³ kgm¯³ and g = 10 ms¯²)
A. 1.0 × 10⁻⁴ ms⁻¹
B. 2.0 x 10⁻⁴ ms⁻¹
C. 2.5 x 10⁻⁴ ms⁻¹
D. 5.0 x 10⁻⁴ ms⁻¹
