According to Maxwell’s theory of electrodynamics, an electron going in a circle should emit radiation of frequency equal to its frequency of revolution. What should be the wavelength of the radiation emitted by a hydrogen atom in ground state if this rule is followed?

Frequency of radiation emitted by hydrogen atom in ground state is where c is speed and denotes the wavelength.


Now, if Maxwell’s theory of electrodynamics is true then this frequency is equal to the frequency due to revolution in the ground state by hydrogen atom which is given as-


where v represents the velocity in ground state and r denotes radius in ground state of hydrogen atom.


Equating both the equations,





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