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Which change leaves the stopping potential of a… | StemPy Lab

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Which change leaves the stopping potential of a photocell unchanged?

PhysicsEasyHigh School (11–12)Modern Physics › Dual Nature of Radiation and Matter

Created by StemPy Lab

Which change leaves the stopping potential of a photocell unchanged?

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← In a photocell the collector is made more and more positive, and the light does not change. What happens to the photocurrent?A photocell cathode has a work function of 4.4 eV. It is lit by ultraviolet light of wavelength 248 nm. How much kinetic energy does the fastest photoelectron have? Use hc = 1240 eV nm. →

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