Given below are two statements:
Statement I: The mean free path of gas molecules is inversely proportional to square of molecular diameter.
Statement II: Average kinetic energy of gas molecules is directly proportional to absolute temperature of gas.
In the light of the above statements, choose the correct answer from the option given below:

Question

Given below are two statements:

Statement I: The mean free path of gas molecules is inversely proportional to square of molecular diameter.

Statement II: Average kinetic energy of gas molecules is directly proportional to absolute temperature of gas.

In the light of the above statements, choose the correct answer from the option given below:

G1 Physics · Accepted Answer

Mean free path: λ = 1/(√2 πd²n) Thus: λ ∝ 1/d² So Statement I is true. Average kinetic energy of an ideal-gas molecule: K(avg) ∝ T So Statement II is also true. Hence both statements are true.