Exam-style question
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What is the significance of the area under the curve in a p-V diagram for a compression process?.
- A.It represents the heat absorbed
- B.It indicates the work done on the gas
- C.It shows the change in internal energy
- D.It measures the efficiency of the process
Model answer
What a good answer should say
- It indicates the work done on the gas
Explanation
Why this works
In a compression process, the area under the curve in a p-V diagram indicates the work done on the gas. This is because work is done on the gas when it is compressed, and this work is represented by the area under the curve in the direction of the compression.
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