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(D) The electromagnetic theory of radiation could not explain the following phenomena:$(i)$ The nature of emission of radiation from hot bodies (black

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All of the above

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(D) The electromagnetic theory of radiation could not explain the following phenomena:$(i)$ The nature of emission of radiation from hot bodies (black-body radiation).$(ii)$ Photoelectric effect: The ejection of electrons from a metal surface when radiation of appropriate frequency strikes it.$(iii)$ Variation of heat capacity of solids as a function of temperature.$(iv)$ Line spectra of atoms with special reference to hydrogen.Therefore,all of the listed observations are not explained by the classical electromagnetic theory.

Which observations are not explained by the electromagnetic theory of physics?

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