Question

A container is divided into two equal part I and II by a partition with a small hole of diameter d. The two partitions are filled with same ideal gas, but held at temperature T_I = 150 K and T_II = 300 K by connecting to heat reservoirs. Let λ_I and λ_II be the mean free paths of the gas particles in the two parts such that d >> λ_I and d >> λ_II. Then λ_I/λ_II is close to -

(A)  0.25

(B)  0.5

(C)   0.7

(D)   1.0

Answer 1

Correct option (C) 0.7

Explanation:

As dimension of hole is very small than mean path, then at equilibrium effusion rate of gas in both direction must be equal.

Comments

How is P1/√T1 = P2/√T2 ?