Question

In an isochoric process the increase in internal energy is

• A. Equal to the heat absorbed
• B. Equal to the heat evolved
• C. Equal to the work done
• D. Equal to the sum of the heat absorbed and work done

Answer 1

The correct option is A Equal to the heat absorbed

For isochoric process $\Delta V=0$ so $q_v=\Delta E$ i.e. heat given to a system under constant volume is used up in increasing $\Delta E$.