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A certain mass of an ideal gas is at pre...

A certain mass of an ideal gas is at pressure `P_(1)` and volume `V_(1)`. If is compressed isothermally and then allowed to expand adiabatically untill its pressure returns to `P_(1)`. The gas is then allowed to expand its original volume. Which of the following `P -V` graphs are these process correctly shown?

A

B

C

D

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The correct Answer is:
A
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