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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediumnumerical

A sample of helium has isotopes of atomic weights 3 and 4 at the same temperature. Find the ratio of the rms speed of the lighter atoms to that of the heavier atoms (two decimals).

Answer:

1.15

Solution:

At the same $T$ , $v_{r m s} \propto \frac{1}{M}$ . Ratio =

$\frac{4}{3} = 1.1547 = 1.15$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws

⏱ 2mℹ️ Source: QB

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