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(D) The photoelectric effect cannot be explained by the classical wave theory of light because the wave theory predicts that the energy of emitted ele

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Quantum nature of light (Photon theory)

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(D) The photoelectric effect cannot be explained by the classical wave theory of light because the wave theory predicts that the energy of emitted electrons should depend on the intensity of light,whereas experiments show it depends on the frequency. Albert Einstein explained the photoelectric effect by proposing that light consists of discrete packets of energy called photons,where the energy of each photon is given by $E = h
u$. This quantum nature of light successfully explains why the kinetic energy of emitted electrons depends on the frequency of incident light.

The photoelectric effect can be understood on the basis of

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