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| 1. |
Every metal has a definite work function. Why do all photoelectrons not come out with the same energy if incident radiatio is monochromatic ? Why is there an energy distribution of photoelectrons ? |
| Answer» Solution :Work FUNCTION of a metal merely indicates the minimum energy REQUIRED for the electron in the highest level of the CONDUCTION band to get out of the metal surface. HOWEVER, all electrons in the metal do not along to this level. They occupy a continuous band of energy levels. as a CONSEQUENCE, for the same incident radiation, electrons knocked off from different energy levels come out with different energies. | |