ultraviolet radiation of wavelength 121 nm is used to irradiate a sample of potassium metal. the work function of potassium is 2.25 ev. calculate the speed of the electrons emitted through the photoelectric effect.

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01-12-2022
Physics

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ultraviolet radiation of wavelength 121 nm is used to irradiate a sample of potassium metal. the work function of potassium is 2.25 ev. calculate the speed of the electrons emitted through the photoelectric effect.

Sagot :

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