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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKTGMedium2 minQB

PhysicsMediumsingle choice

A gas contains only rigid diatomic molecules at temperature T. If I is the moment of inertia of the molecule, then the mean square angular velocity of the molecule is:

Options:

Answer:

Solution:

A rigid diatomic molecule has 2 rotational degrees of freedom:

$\frac{1}{2} I ⟨ ω^{2} ⟩ = 2 \times \frac{1}{2} k T = k T \Rightarrow ⟨ ω^{2} ⟩ = \frac{2 k T}{I} .$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:KTG

⏱ 2mℹ️ Source: QB

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