Two spherical balls of radii $r_1$ and $r_2$ ($r_1 < r_2$) are falling through a viscous fluid with terminal velocities $v_1$ and $v_2$ respectively. If the densities of the balls are the same and Stokes' Law applies, which of the following relationships is correct?

A small tiny lead shot is gently dropped on the surface of a viscous liquid

Eight drops of a density ρ and each of radius a are falling through air with a constant velocity $375{\rm{cm}}{{\rm{s}}^{ - 1}}$). When the eight drops coalesce to from a single drop the terminal velocity of the new drop will be

The terminal speed of a sphere of gold $\left( {{\rm{density}} = 19.5{\rm{kg}}{{\rm{m}}^{ - 3}}} \right)$ is $0.2{\rm{m}}{{\rm{s}}^{ - 1}}$ in a viscous liquid $\left( {{\rm{density}} = 1.5{\rm{kg}}{{\rm{m}}^{ - 3}}} \right)$. Then the terminal speed of a sphere of silver $\left( {{\rm{density}} = 10.5{\rm{kg}}{{\rm{m}}^{ - 3}}} \right)$ of the same size in the same liquid is

A raindrop reaching the ground with terminal velocity has momentum p. Another drop of twice the radius, also reaching the ground with terminal velocity, will have momentum

Speed of 2 cm radius ball in a viscous liquid is $20{\rm{cm}}{{\rm{s}}^{ - 1}}$. Then the speed of 1 cm radius ball in the same liquid is

The viscous force on a lead shot travelling down with velocity V in a liquid column is F. If the same lead shot travelling down with velocity 3V in an other vertical liquid column is opposed by viscous force 2F, the ratio of the coefficients of viscosities of the liquids is

A metal sphere falling through glycerin has a terminal velocity 'v'. If we heat the glycerin, thereby decreasing its viscosity, what will happen to the terminal velocity of the sphere?

A ball of mass $m$ and radius $r$ is released in a viscous liquid. The value of its terminal velocity is proportional

A small spherical ball falling through a viscous medium of negligible density has terminal velocity $v$. Another ball of the same mass but of radius twice that of the earlier falling through the same viscous medium will have terminal velocity

A piece of wax weighs 18.03 g in air. A piece of metal is found to weigh 17.03 g in water. It is tied to the wax and both together weigh 15.23 g in water. Then, the specific gravity of wax is