NEET Solved Paper 2014 Question 19

Question: The mean free path of molecules of a gas, (radius r) is inversely proportional to [AIPMT 2014]

Options:

A) $ r^{3} $

B) $ r^{2} $

C) r

D) 4r

Show Answer

Answer:

Correct Answer: B

Solution:

Mean free path $ l=\frac{1}{n\pi r^{2}} $ $ l\propto \frac{1}{r^{2}} $