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The incorrect statement related to a thermodynamic work W is :

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it is defined as $\int PdV$

W is positive if the system expands

W is negative if the system contracts

W=0 if process is cyclic.

answer is D.

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Detailed Solution

Area of PV diagram is work done i.e., $\int PdV$
dv is positive for expansion dv is negative for compression. for a cyclic process work done is area of the PV diagram.

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