Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11
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Which of the Following Quantities is Zero on an Average for the Molecules of an Ideal Gas in Equilibrium? - Physics

MCQ

Which of the following quantities is zero on an average for the molecules of an ideal gas in equilibrium?

Options

  • Kinetic energy

  • Momentum

  • Density

  • Speed

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Solution

Momentum

The molecules move in all possible directions in an ideal gas at equilibrium. Since momentum is a vector quantity for every direction of motion of the molecules, there exists an opposite direction of motion of the other. Hence, the average momentum is zero for an ideal gas at equilibrium.

Concept: Kinetic Theory of Gases and Radiation - Introduction of Kinetic Theory of an Ideal Gas
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 2 Kinetic Theory of Gases
MCQ | Q 3 | Page 34
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