MCQ
We consider a thermodynamic system. If ∆U represent the increase in its energy and W the work done by the system, which of the following statements is true?
- A∆U = – W in an isothermal process
- ✓∆U = – W in an adiabatic process
- C∆U = W in an isothermal process
- D∆U = W in an adiabatic process