JEE Main · PhysicsMedium
The mean free path of gas molecules depends on the diameter $d$ of the molecules as
- A.$\propto d$
- B.$\propto d^2$
- C.$\propto 1/d$
- D.$\propto 1/d^2$
Show correct answer & step-by-step solution
Correct answer: D — $\propto 1/d^2$
Solution
The mean free path is given by the formula , where is the number density and is the molecular diameter. Thus, is inversely proportional to the square of the diameter.
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