A System Undergoes an Adiabatic Process in Which Its Internal

Multiple Choice

A system undergoes an adiabatic process in which its internal energy increases by 20 J.Which of the following statements is true?

A) 20 J of work was done on the system
B) 20 J of work was done by the system
C) the system received 20 J of energy as heat
D) the system lost 20 J of energy as heat
E) none of the above are true