An ideal gas is subjected to a cyclic process involving four thermodynamic states; the amounts of heat (Q) and work (W) involved in each of these states are
Q₁ = 6000 J, Q₂ = – 5500 J ; Q₃ = – 3000 J; Q₄ = 3500 J
W₁ = 2500 J; W₂ = – 1000 J; W₃ = – 1200 J; W₄ = xJ.
The ratio of the net work done by the gas to the total heat abosrbed by the gas is 'η'. The values of x and 'η' respetively are

Question

Infinity Learn · Accepted Answer

Incyclic process Δu $$=$$ $$0Qnet$$ $$=$$ $$Wnet6000$$–$$5500$$–$$3000+3500$$ $$=$$ $$2500$$–$$1000$$–$$1200+xx$$ $$=$$ $$700$$ JWnet $$=$$ $$(2500$$ $$-$$ $$1000$$ $$-$$ $$1200$$ $$+$$ $$700)J=$$ $$1000Heat$$ supplied $$Q1$$ $$=$$ $$(6000$$ $$+$$ $$3500)J=$$ $$9500$$ J.

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