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 stated are :Q1=6000J,Q2=−5500;Q3=−3000Q4=3500J:W1=2500J;W2=−1000J;W3=−1200J;W4=xJ. The ratio of the net work done by the gas to the total heat absorbed by the gas is ′η. The values of x and η respectively are:
