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NEET2014PhysicsKinetic Theory of GasesActual

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

Options

  1. Ar 3
  2. Br 2
  3. Cr
  4. Dr

Correct answer

B. r 2

Step-by-step solution

Here we have to calculate that mean free path of molecule is inversely prooportional to what power of r we know that, Mean free path l = 1 2 n d 2 So: l ∝ 1 d 2 ⇒ l ∝ 1 r 2 Hence the mean free path of the molecule is inversely proportional to r 2 .

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