Choose the correct option for the following Assertion (A) and Reason (R).

Question

G1 Physics · Accepted Answer

For an ideal gas, the average translational kinetic energy per molecule is K(avg) = (3 ÷ 2)kT. Therefore equal average kinetic energies imply equal temperatures. The Assertion is true. However, v(rms) = √(3RT ÷ M). At the same temperature, H₂ and O₂ have different molar masses, so their rms speeds are different. Hence the Reason is false. Therefore A is true but R is false. Correct option: C.