Question

The average kinetic energy of the molecule in a substance is directly proportional to its temperature.

• A. True
• B. False

Answer 1

The correct option is A True

1. The average kinetic energy of a molecule is equal to $\frac{3}{2}kT$, k is known as Boltzmann constant, T is the temperature.
2. The Boltzmann constant is the physical constant relating the average kinetic energy of the gas particles and the temperature of the gas.
3. The temperature of a body depends on the average kinetic energy of its molecules due to their random motion.
4. The temperature will rise up if the kinetic energy of the molecules of the substance increases and vice versa.
5. The average kinetic energy of gas particles is proportional to the absolute temperature of the gas, and all gases at the same temperature have the same kinetic energy.

Hence, the given statement is true.