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Question:

A gas is taken through the cycle A→B→C→A, as shown. What is the net work done by the gas?

zero

6000J

2000 J

1000 J

Solution:

W=Area enclosed in P-V curve=1/2 × 5 × 10⁵ × 4 × 10⁵ = 10 × 10² = 1000J