JEE Main 2022 — Kinetic Theory of Gases Question with Solution
JEE Main 2022 (27 Jul Shift 2)
Question
Which statements are correct about degrees of freedom?
A. A molecule with degrees of freedom has different ways of storing energy.
B. Each degree of freedom is associated with average energy per mole.
C. A monoatomic gas molecule has rotational degree of freedom where as diatomic molecule has rotational degrees of freedom
D. has a total to degrees of freedom.
Choose the correct answer from the option given below:
Choose an option
Show full solutionCorrect option: B
Step-by-step explanation
According to the equipartition of energy, each degree of freedom carries energy per mole and total energy per mole of a gas having degrees of freedom is . Therefore, statement A is wrong and statement B is correct.
A monoatomic molecule only has translational degrees of freedom and does not have rotational degree of freedom. For a polyatomic model there are three rotational degrees of freedom and three translational degrees of freedom. Therefore, statement C is incorrect and statement D is correct.
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This is a previous-year question from JEE Main 2022, 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.