A thermodynamic system is taken from state $A$ to $B$ along $ACB$ and is brought back to $A$ along $BDA$ as shown in the $PV$ diagram. The net work done during the complete cycle is given by the area
A$P_1ACBP_2P_1$
B$ACBB'A'A$
C$ACBDA$
D$ADBB'A'A$
AIPMT 1992, Medium
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C$ACBDA$
c (c)The work done in cyclic process is equal to the area enclosed by the $PV$ diagram
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