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

The `P-V` diagram of a system undergoing thermodynnaic transformation is shown in Fig. The work done on the system in going from `A rarr B rarr C` is `50 J` and `20 cal` heat is given to the system. The change in internal erergy between `A` and `C` is

A

34 J

B

70 J

C

84 J

D

134 J

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The correct Answer is:
D
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