MCQ
Diatomic molecules like hydrogen have energies due to both translational as well as rotational motion. From the equation in kinetic theory $\text{PV} = \frac{2}{3}$ E,E is:
- AThe total energy per unit volume.
- BOnly the translational part of energy because rotational energy is very small compared to the translational energy.
- ✓Only the translational part of the energy because during collisions with the wall pressure relates to change in linear momentum.
- DThe translational part of the energy because rotational energies of molecules can be of either sign and its average over all the molecules is zero.
