A body has 15J of heat energy in a particular state. At the same state it has an internal energy of 30J. Assume no work is done, what will happen to the internal energy if 5J of heat is added to the system?

MCQs on thermal equilibrium, zeroth law of thermodynamics, heat, internal energy and work, thermodynamics first and second law, thermodynamic processes, heat engines, heat pumps and refrigerators, carnot engine, thermodynamics specific heat capacity, reversible and irreversible processes.