Question: Gold, with a work function of 5 . 1 eV , is used in a photoelectric effect experiment. What is the maximum wavelength of light

Gold, with a work function of 5.1 eV, is used in a photoelectric effect experiment.
What is the maximum wavelength of light which will release photons from the gold?
What is the maximum electron ejection speed if the gold is illuminated with 220 nm light?
What is the stopping potential when the gold is illuminated with 220 nm light?

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