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The P - V diagram of a system undergoing...

The `P - V` diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from `A rarr B rarr C is 30 J` and `40 J` heat is given to the system. The change in internal energy between `A and C` is

A

`10 J`

B

`70 J`

C

`84 J`

D

`134 J`

Text Solution

Verified by Experts

The correct Answer is:
A
Heat given `DeltaQ =40J` and work done `DeltaW = 30J`
`implies DeltaQ=DeltaQ-DeltaW = 40-30 = 10J`.
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