If n is the number density and 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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Question

If n is the number density and 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 :

G1 Physics · Accepted Answer

Mean free path of gas molecules is: λ = 1/(√2 πnd²) where: n = number of molecules per unit volume d = molecular diameter Therefore, Option C is correct.