InterviewSolution
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InterviewSolution
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Assertion: Each vibrational mode gives two degrees of freedom. Reason: By law of equipartition of energy, the energy for each degree of freedom in thermal equlibrium is `2k_(B)T.`A. If both assertion and reason are true and reason is the correct explanation os assertion.B. If both assertion and reason are true but reason is not be correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - C By law of equipartition of energy, the energy for each degree of freedom in thermal equilibrium is `1/2k_(B)T.` Each quadratic term from in the total energy rxpression of a molecules is to be conunted as a degree of freedom. Thus each vibriational mode gives 2 degrees of freedom i.e., kinetic and potential energy modes, corresponding to the energy `2((1)/(2)k_(BT))=k_(B)T.` |
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