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Question: Answered & Verified by Expert
Assertion : The total translational kinetic energy of all the molecules of a given mass of an ideal gas is 1.5 times the product of its pressure and its volume.
Reason : The molecules of a gas collide with each other and the velocities of the molecules change due to collision.
PhysicsKinetic Theory of GasesAIIMSAIIMS 2018 (27 May)
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion.
  • B If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C If assertion is true but reason is false.
  • D If both assertion and reason are false.
Solution:
2721 Upvotes Verified Answer
The correct answer is: If both assertion and reason are true but reason is not the correct explanation of assertion.
Average translational kinetic energy of a gas molecule is $E=\frac{3}{2} k T$
For all gas molecules
$E=\frac{3}{2} k T \times N_A=\frac{3}{2} R T=\frac{3}{2} P V$

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