JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

A spherical ball of radius $3.0 \times 10^{-4} \mathrm{~m}$ and density $10^4 \mathrm{~kg} / \mathrm{m}^3$ falls freely under gravity through a distance ' $h$ ' before entering a tank of water. If after entering the water the velocity of the ball does not change, $h$ is (Viscosity of water is $10^{-5} \frac{\mathrm{Ns}}{\mathrm{m}^2},\quad g=10 \mathrm{~m} / \mathrm{s}^2$)