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A photocell cathode needs 5.1 eV to release an… | StemPy Lab

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A photocell cathode needs 5.1 eV to release an electron. Ultraviolet light of wavelength 190 nm is shone on it. What collector voltage, in size, stops the current? Use hc = 1240 eV nm.

PhysicsMediumHigh School (11–12)Modern Physics › Dual Nature of Radiation and Matter Board Exam AP A-Level IB

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A photocell cathode needs $5.1$ eV to release an electron. Ultraviolet light of wavelength $190$ nm is shone on it. What collector voltage, in size, stops the current? Use $hc = 1240$ eV nm.

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← What is the energy of a photon of wavelength 354 nm? Use hc = 1240 eV nm.What is meant by the threshold frequency of a metal? →

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