Q: The P-V diagram represents the thermodynamic cycle of an engine, operating with an ideal monoatomic gas. The amount of heat, extracted from the source in a single cycle is
(a) P0 V0
(b) (13/2) P0 V0
(c) (11/ 2) P0 V0
(d) 4 P0 V0
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Ans: (b)