JEE Main 2013 — Kinetic Theory of Gases Question with Solution
JEE Main 2013 (23 Apr Online)
Question
This question has Statement-1 and Statement-2. Of the four choices given after the Statements, choose the one that best describes the two Statements.
Statement 1: The internal energy of a perfect gas is entirely kinetic and depends only on absolute temperature of the gas and not on its pressure or volume.
Statement 2: A perfect gas is heated keeping pressure constant and later at constant volume. For the same amount of heat the temperature of the gas at constant pressure is lower than that at constant volume.
Choose an option
Show full solutionCorrect option: C
Correct answer
CStatement-1 is true, Statement-2 is true but Statement-2 is not the correct explanation of Statement-1.
Step-by-step explanation
Internal energy of a system is the energy possessed by the system due to molecular motion and molecular configuration. Internal energy For an ideal gas there is no molecular attraction
Internal energy (i.e., internal kinetic energy)
and
At constant pressure
At constant volume
As C
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Kinetic Theory of Gases chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2013, covering the Kinetic Theory of Gases chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.