NEET Physics Mean Free Path MCQ Question
If the mean free path of a gas is defined as the average distance travelled by a molecule between successive collisions, which of the following factors directly affects the mean free path of a gas?
Density of the gas
Volume of the container
Molecular weight of the gas
Shape of the molecules
Correct Answer
Detailed Explanation
The mean free path is inversely proportional to the density of the gas; as density increases, the mean free path decreases. Other factors like volume of the container, molecular weight, and shape of molecules do not directly affect the mean free path.
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