Why the photoelectrons emitted from a metal surface for a certain radi – InterviewSolution

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1.	Why the photoelectrons emitted from a metal surface for a certain radiation have different energies even if work function of metal is a constant?
Answer» Work function is the minimum energy required for the electron in the highest level of the conduction band to get out of the metal. Not all electrons in the metal belong to this level. They occupy a continuous band of levels. Consequently, for the same incident radiation, electrons knocked off from different levels come out with different energies.

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