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Assertion: The carnot cycle is useful in understanding the performance of heat engine.
Reason: The carnot cycle provided a way of determining the maximum possible efficiency achievable with reservoirs of given temperature.
A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If the assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false

1 Answer

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Correct Answer - A
An ideal engine called a Carnot engine serves as ideal heat engine. This ideal engine turns put to be the best at using energy as heat to do useful work. Carnot engine comprises four cycles. During each cycle of engine , the working substance absorbs energy `|Q_(H)|`as heat from a thermal reservoir at constant temperature `T_(H)` and discharges energy `|Q_(L)|` as heat to a secon thermal reservoir at a constant lower temperature `T_(L)` . Thus, carnot cycle provides a way of determine the maximum possible efficiency achievable with reservoures of given temperature.
Hence option (a) is true.

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