Question

statement 1: All the rain drops do not reach the surface of the earth with the same velocity
Statement 2: An object falling through a viscous medium eventually attains a terminal velocity.

• A. Statement $-1$ is true, Statement $-2$ is false
• B. Statement $-1$ is false, Statement $-2$ is true
• C. Statement $-1$ is true, Statement $-2$ is true and Statement $-2$ is a correct explanation for Statement1.
• D. Statement $-1$ is true, Statement $-2$ is true but Statement $-2$ is not a correct explanation for Statement $-1$

Answer 1

Answer: (D)

Statement $-1$ is true, Statement $-2$ is true but Statement $-2$ is not a correct explanation for Statement $-1.$ Assuming, the rain drops as spherical, the stoke's force on it would be $6\pi nrv$. As radius ' $r^{\prime }$ for raindrops is different, the terminal velocity acquired by raindrop would be
different. $mg=6\pi \eta r{v}_t$