Exam-style question
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How is the work done by a gas during expansion represented on a p-V diagram?.
- A.As the area above the curve
- B.As the area below the curve
- C.As the total area enclosed
- D.As the slope of the curve
Model answer
What a good answer should say
- As the area below the curve
Explanation
Why this works
The work done by a gas during expansion is represented as the area below the curve on a p-V diagram. This area corresponds to the energy transferred as work when the gas expands against an external pressure.
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