For a cyclic heat engine process, the PV diagram will be a closed loop. The area inside the loop will represent the amount of work done during the cycle.
The work done is given as,
[tex]W=\text{work done by the gas-work done on the gas}[/tex]
Substituting all known values,
[tex]\begin{gathered} W=60000\text{ J-10000 J} \\ =50000\text{ J} \end{gathered}[/tex]
Therefore, option (c) is the correct choice.
