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Question 31013
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Kinetic Theory and Thermodynamics: Mean Free Path MCQ

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Mean Free PathHardQuestion 31013

Question

Mean free path λ of gas molecules is:
  1. A
    Inversely proportional to pressure
    Correct
  2. B
    Proportional to pressure
  3. C
    Inversely proportional to temperature
  4. D
    Independent of temperature

Correct answer

Inversely proportional to pressure

Explanation

λ = kT/(√2 πd²P). At constant T, λ ∝ 1/P. Higher pressure means more collisions, shorter mean free path.

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