In a thermodynamic process,if $\Delta W$ and $\Delta U$ are the work done and the change in the internal energy of a system respectively,then:
- A$\Delta U = \Delta W$ in an adiabatic process
- B$\Delta U = \Delta W$ in an isothermal process
- C$\Delta U = -\Delta W$ in an isothermal process
- D$\Delta U = -\Delta W$ in an adiabatic process
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