AIIMS 2018 Physics Work Done MCQ Question
Assertion: A man rowing a boat upstream is at rest with respect to the bank. He is doing no external work.
Reason: In uniform circular motion, velocity remains constant.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
In thermodynamics, the symbol represents entropy, and denotes work. If the entropy , it implies a state of perfect order, where no energy disperses, leading to no work being done, hence . Options B, C, and D are incorrect as they do not align with the fundamental relationship between entropy and work in a closed system, where a zero entropy state inherently results in zero work output.
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