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State the law of equipartition of energy. |
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Answer» Solution :According to kinetic theory the average kinetic energy of system of molecules in thermnal equilibrium at tempreture T is uniformly distributed all degrees of freedom (x or y or z direction of motion ) so that each degree of freedom will GET `(1)/(2)kT` of energy. This is called LAW of EQUIPARTITION of energey. Average KINECTIC energy of MONATOMIC molecule `(with int=3)=3xx(1)/(2)kT=(3)/(2)kT` Average kinectic energy of diatomic molecule at low tempreture `(withint=5)=5xx(1)/(2)kT=(5)/(2)kT` Average kinectic energy of diamotic molecule at thehigh tempreture `(withint=7)=7xx(1)/(2)kT=(7)/(2)kT` Average kinectic energy of linear triatomicmolecule `(withint=7)=7xx(1)/(2)kT=(7)/(2)kT` Average kinectic energy of non linear triatomicmolecule `(withint=6)=6xx(1)/(2)kT=3kT`. |
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