An ideal gas is taken from state- 1 to state- 2 through optional path A , B , C and D as shown in the P - V diagram. Let Q , W and U represent the heat supplied, work done and change internal energy respectively, then

Step-by-step solution

The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic processes, distinguishing two kinds of transfer of energy, as heat and as thermodynamic work, and relating them to a function of a body's state, called internal energy.