Question

The terminal velocity of a small sized spherical body of radius r falling in a viscous liquid is proportional to _________.

• A. $\frac{1}{r^2}$
• B. $\frac{1}{r}$
• C. $r^2$
• D. $r$

Answer 1

The correct option is C $r^2$

By Stokes' law the terminal velocity of spherical body in a viscous liquid is directly proportional to the square of its radius.