The mean free path for a gas, with molecular diameter \(d\) and number density \(n,\) can be expressed as:

1. \( \dfrac{1}{\sqrt{2} n \pi {d}^2} \) 2. \( \dfrac{1}{\sqrt{2} n^2 \pi {d}^2} \)
3. \(\dfrac{1}{\sqrt{2} n^2 \pi^2 d^2} \) 4. \( \dfrac{1}{\sqrt{2} n \pi {d}}\)
Subtopic:  Mean Free Path |
 83%
Level 1: 80%+
NEET - 2020
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The mean free path of molecules of a gas (radius \(r\)) is inversely proportional to:

1. \(r^3\) 2. \(r^2\)
3. \(r\) 4. \(\sqrt{r}\)
Subtopic:  Mean Free Path |
 85%
Level 1: 80%+
AIPMT - 2014
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