One mole of an ideal monoatomic gas is subjected to changes as shown in the graph. The magnitude of the work done (by the system or on the system) is _______ J (nearest integer) Given : log 2 = 0.3, ln 10 = 2.3

Step-by-step solution

1 to 2 , Isobaric process 2 to 3, Isochoric process 3 to 1, Isothermal process Using work under isobaric, isochoric and isothermal processes respectively: W = W 1 → 2 + W 2 → 3 + W 3 → 1 W = ( ( - P ( V 2 - V 1 ) + 0 + ( - P 1 V 1 ( ln V 2 V 1 ) ) = ( ( - 1 ( 40 - 20 ) + 0 + ( - 1 × 20 ( ln 20 40 ) ) = 620 J