NEET Physics Laws of Thermodynamics Assertion Reason Question
Assertion (A): In an isolated system, the total entropy can never decrease. | Reason (R): In an isolated system, energy remains constant.
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 assertion is true based on the second law of thermodynamics, which states that the entropy of an isolated system always increases or remains constant. The reason is true but does not explain the assertion because constant energy does not imply increasing entropy.
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