Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB
PhysicsMediumsingle choice

An ideal gas undergoes a reversible isothermal expansion. Which of these stay the same: (i) mean kinetic energy of a molecule (ii) rms speed (iii) mean free path?

Options:

Answer:
B
Solution:

Mean kinetic energy and rms speed depend only on , which is constant. The mean free path grows as the volume rises. B.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics Laws & Specific Heats of Gases
⏱ 2mℹ️ Source: QB

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