A thermodynamic system is taken through the cycle $PQRSP$ process. The net work done by the system is ....... $J$
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(b) Work done by the system = Area of shaded portion on $P-V$ diagram
$ = (300 - 100){10^{ - 6}} \times (200 - 10) \times {10^3} = 20\,J$
$ = (300 - 100){10^{ - 6}} \times (200 - 10) \times {10^3} = 20\,J$
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