A) For an isothermal process, Q = + W
B) For an isochoric process, \[\Delta U=-Q\]
C) For an adiabatic process, \[\Delta U=-W\]
D) For a cyclic process, \[\Delta U=-W\]
Correct Answer: D
Solution :
According to first law of thermodynamics, \[\Delta U=Q+W\] For cyclic process, change in internal energy \[=0\] \[\therefore \] \[Q=-W\]
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