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In the P-V diagram shown in figure ABC i...

In the `P-V` diagram shown in figure `ABC` is a semicircle. The work done in the process `ABC` is

A

Zero

B

`(pi)/(2)atm-l t`

C

`-(pi)/(2)atm-l t`

D

4 atm-lt

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The correct Answer is:
B
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