Question

Mean free path of gas molecule at constant temperature is inversely proportional to

• A. p
• B. V
• C. m
• D. n (number density)

Answer 1

Answer: (D)

n (number density)

Answer 2

Mean free path $\lambda = \frac{1}{ \sqrt 2 \pi n d^2 }$ where d = diameter of the molecule n = number of molecules per unit volume.