The mean free path of molecules of a gas (radius r) is inversely proportional to

Options

A. `r^(3)`
B. `r^(2)`
C. r
D. `sqrtr`

Answer

B

Explanation

Mean free path, `lamda=(1)/(sqrt2pind^(2))rArrlamdaprop1/(r^(2))`
where, d = diameter of the molecule
n= number of molecules per unit volume.