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How is photoelectron energy related to excitation wavelength?

How is photoelectron energy related to excitation wavelength?

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1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
A photoelectron is an electron that is ejected from a substance (most often an alkali metal) after it absorbs electromagnetic radiation. In this case, shining violet light on cesium causes ejection of electrons. Some of the energy of the light goes into jarring the electron free of the metal; the rest appears as kinetic energy of the electron:energy
per
photon = energy to pull one electron out of metal + kinetic energy per ejected
electron

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