Kinetic Theory · JEE Preparation Physics

A gas is kept in a rigid container. If the average translational kinetic energy of its molecules is increased by 4%, the percentage increase in the p…

Practice question from Kinetic Theory (JEE Preparation Physics), with the correct answer and a step-by-step solution.

easy · MCQ · Q-E543F3

A gas is kept in a rigid container. If the average translational kinetic energy of its molecules is increased by 4%4\%, the percentage increase in the pressure of the gas is:

  1. A.2%2\%
  2. B.4%4\%Correct answer
  3. C.8%8\%
  4. D.0%0\%

Solution

The pressure of an ideal gas is given by P=23EP = \frac{2}{3}E, where EE is the total translational kinetic energy per unit volume. Since the volume of the rigid container is constant, pressure is directly proportional to the kinetic energy of the molecules. Therefore, a 4%4\% increase in kinetic energy leads to a 4%4\% increase in pressure.

More from Kinetic Theory

All of Kinetic Theory

Practise more Physics

Sign up free for adaptive practice on this chapter, with instant feedback and hints on every question.

Start practising free

Free to start · No credit card needed