Kinetic Theory

JEE Main level, single correct, medium

27 of 168

Question 27 of 168

If n\mathrm{n} is the number density and d\mathrm{d} is the diameter of the molecule, then the average distance covered by a molecule between two successive collisions (i.e. mean free path) is represented by :

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Answer: (C) 12nπd2\frac{1}{\sqrt{2} n \pi d^2}

n=\mathrm{n}= number of molecule per unit volume
d=\mathrm{d}= diameter of the molecule
λ=12πd2n\lambda=\frac{1}{\sqrt{2} \pi \mathrm{d}^2 \mathrm{n}}
(By Theory)

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