$A$ system goes from $A$ to $B$ via two processes $I$ and $II$ as shown in the figure. If $\Delta U_1$ and $\Delta U_2$ are the changes in internal energies in the processes $I$ and $II$ respectively,then the relation between $\Delta U_1$ and $\Delta U_2$ is

  • A
    $\Delta U_1 = \Delta U_2$
  • B
    $\Delta U_2 < \Delta U_1$
  • C
    $\Delta U_2 > \Delta U_1$
  • D
    undetermined

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