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MHT CET 2024 Physics question

PhysicsThermodynamicsMHT CET 2024

Heat engine operating between temperature and has efficiency . When is lowered by 62 K, its efficiency increases to . Then and respectively are

Answer: (A)

Solution

For a Carnot-type engine . First case: , so . Second case: , so . Subtracting: $Missing argument for \dfrac\dfrac-Missing argument for \dfrac\dfrac=62⇒Missing argument for \dfrac\dfrac=62⇒ =372\

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Question ID VK-095441