JAMB Physics 2024 Paper

Concept:The average translational kinetic energy of gas molecules depends only on the absolute temperature of the gas.Explanation:For an ideal gas, the average translational kinetic energy per molecule is given by the relation:$$E_k = \frac{3}{2} k_B T$$Here, $E_k$ is the average translational kinetic energy, $k_B$ is Boltzmann's constant, and $T$ is the absolute temperature.In this formula, only temperature $T$ appears as a changing quantity.The values of $k_B$ and the factor $\frac{3}{2}$ are constant for all gases.Therefore, increasing temperature increases the average molecular kinetic energy, while pressure and number of moles do not directly determine this average energy.Answer:A. Temperature only