Previous Year NEET Question- Thermodynamics L-4

Question: The mean free path for a gas, with molecular diameter $d$ and number density $n$ can be expressed as :#

A) $\frac{1}{\sqrt{2} n \pi d^2}$

B) $\frac{1}{\sqrt{2} n^2 \pi d^2}$

C) $\frac{1}{\sqrt{2} n^2 \pi^2 d^2}$

D) $\frac{1}{\sqrt{2} n \pi d}$

Answer: $\frac{1}{\sqrt{2} n \pi d^2}$#