NEET Physics (general) Assertion Reason Question
Assertion (A): The distribution of speeds of molecules in a gas at equilibrium is fixed. | Reason (R): Collisions among molecules change their directions and speeds, but do not alter the overall distribution of speeds at equilibrium.
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 NCERT context explains that in a state of equilibrium, despite collisions changing directions and speeds of molecules, the distribution of speeds remains constant. This validates both the assertion and the reason, with the reason correctly explaining the assertion.
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