Calculate the ratio of the mean free paths of the molecules of two gases having molecular diameters `1 A and 2 A`. The gases may be considered under identical conditions of temperature, pressure and volume.

Explanation

here, `d_(1) = 1 Å, d_(2) = 2 Å`
under idential condition of temperature , pressure and volume, mean free path , `lambda prop 1/(d^2)`
`:. (lambda_1)/(lambda_2) = (d_(1)^(2))/(d_(2)^(2)) = (2/1)^(2) = 4:1`.