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A thermodynamic system is taken through ...

A thermodynamic system is taken through the cycle `ABCD` as shown in the figure. Heat rejected by the gas during the cycle is

A

`PV`

B

`2PV`

C

`4PV`

D

`1/2 PV`

Text Solution

Verified by Experts

The correct Answer is:
B
From the first law of thermodynamics
`DeltaQ = DeltaU + DeltaW`
For cycle process `DeltaU=0`
Hence, `Q = W`
Work done `W` = area under `p-V` disgram
`implies Q = -2PV`.
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