Question

An ideal monoatomic gas is taken through cycle $A\to B\to C\to A$. What is the change in the internal energy during the cycle $A\to B\to C\to A$?

• A. Zero
• B. $-6P_0{V}_0$
• C. $9P_0{V}_0$
• D. $2P_0{V}_0$

Answer 1

The correct option is A Zero

For cyclic process, internal energy change $\Delta U=0$ internal energy is a state function. Hence, in a cyclic process, where initial and final states are same,the initial and final internal energies are same.