Q146 / 150 · MHT CET 2026 (16 April Shift 1) · Physics

The translational kinetic energy of the molecules of a gas at absolute temperature (T) can be doubled by

  • A
    increasing T to 4 T
  • B
    increasing T to $\sqrt{2}$ T
  • C
    decreasing T to T/2
  • Correct answer
    D
    increasing T to 2T

Solution

The translational kinetic energy of the molecules of a gas is given by $E = \dfrac{3}{2} k_B T$.

Since $E \propto T$, to double the translational kinetic energy, the absolute temperature must be doubled.

Therefore, the temperature should be increased to $2T$.

Answer: increasing T to 2T

Hence, the correct answer is option: 'D'.

Relevant Questions