NEET Physics Mean Free Path Assertion Reason Question
Assertion (A): The mean free path of a gas molecule decreases with increasing pressure. | Reason (R): Higher pressure implies a greater number of molecules in a given volume, leading to more frequent collisions.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true, but R is false.
A is false.
Correct Answer
Detailed Explanation
The mean free path is inversely related to the number density of the gas molecules. Higher pressure increases the number density, leading to a decreased mean free path due to more frequent collisions.
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