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MHT CET 2025 Physics question

PhysicsThermodynamicsMHT CET 2025

An engine operating between temperatures T and T has efficiency . When T is lowered by 45 K, its efficiency becomes . Temperatures T and T are respectively

Answer: (D)

Solution

For a Carnot engine . First case: . Second case: . Substituting :

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Question ID VK-101868