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JEE PHYSICS MCQ: THERMODYNAMICS
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Assertion: The efficiency of a heat engine can be unity.
Reason: Efficiency of heat engine is fundamental limitation given by first law of thermodynamics.
Reason: Efficiency of heat engine is fundamental limitation given by first law of thermodynamics.
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Correct option: D
If both assertion and reason are false
Option D (If both assertion and reason are false) is correct because the efficiency of a heat engine cannot be unity, and the first law of thermodynamics does not impose a fundamental limitation on efficiency.
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