ThermodynamicsHard
Question
In the diagrams (i) to (iv) of variation of volume with changing pressure is shown. A gas is taken along the path ABCDA. The change in internal energy of the gas will be:-
Options
A.Positive in all cases (i) to (iv)
B.Positive in cases (i), (ii) and (iii) but zero in case (iv)
C.Negative in cases (i), (ii) and (iii) but zero in case (iv)
D.Zero in all the four cases
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