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An ideal gas expands isothermally from v...

An ideal gas expands isothermally from volume `V_(1)` to `V_(2)` and is then compressed to original volume `V_(1)` adiabatically. Initialy pressure is `P_(1)` and final pressure is `P_(3)`. The total work done is `W`. Then

A

`P_(3) gt P_(1),W gt 0`

B

`P_(3) lt P_(1), W lt 0`

C

`P_(3) gt P_(1),W lt 0`

D

`P_(3)=P_(1),W=0`

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