STANDARD Physics Mean Free Path MCQ Question
The mean free path λ of molecules is given by where n is the number of molecules per unit volume and d is the diameter of the molecules.
√2πnd²
1/πnd²
1/√2πnd²
1/√2πnd²
Correct Answer
Detailed Explanation
Mean free path λ of a molecule is represented as: λ = 1/√2πd² * N/V where N = no. of molecules, V = volume, n = N/V. So, λ = 1/√2πd²n. The correct answer is 1/√2πnd².
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