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The P-V diagram below represents the thermodynamic cycle of an engine operating with an ideal monatomic gas. The amount of heat extracted from the source in a single cycle and the efficiency of the cycle are, respectively,

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Important Questions on Thermodynamics

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A carnot engine whose efficiency is 40% takes in heat from a source, maintained at a temperature of 500 K. It is desired to have an engine of efficiency 60%. Then the intake temperature for the same exhaust (sink) temperature must be