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The function of a photoelectric material is the energy that a photon of light must possess to just expel an electron from the surface of a material. The work function of cesium is 3.42 x 10^-19 Joules.Ê

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The threshold frequency of cesium is the minimum frequency of light required to eject electrons from the metal surface through the photoelectric effect. For cesium, the threshold frequency is approximately 3.5 x 10^14 Hz. Any light with a frequency higher than this value will be able to cause the photoelectric effect in cesium.

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10mo ago
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Q: What is the thresh hold frequency of cesium?
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