First slide

Work done by gas

Question

The correct statement related to a thermodynamic work W is :

Easy

A

it is defined as $\int PdV$
B

W is positive if the system expands
C

W is negative if the system contracts
D

All the above

Solution

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

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