Kinetic Theory - Result Question 28

28. The mean free path of molecules of a gas, (radius ’ r ‘) is inversely proportional to :

(a) r3

(b) r2

(c) r

(d) r

[2014]

Show Answer

Answer:

Correct Answer: 28. (b)

Solution:

  1. (b) Mean free path λm=12πd2n where d= diameter of molecule and d=2r

∴λm∝1r2

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