magnesium metal foil was illuminated by a pulse of laser beam with a wavelength of 306 nm. A total number of 6 x 10³ ejected electrons were generated. Each electron has an de Broglie wavelength of 2 nm. (a) Calculate the work function (express the answer in eV) (b) Calculate the threshold frequency (express the answer in nm).

magnesium metal foil was illuminated by a pulse of laser beam with a wavelength of 306 nm. A total number of 6 x 10³ ejected electrons were generated. Each electron has an de Broglie wavelength of 2 nm. (a) Calculate the work function (express the answer in eV) (b) Calculate the threshold frequency (express the answer in nm).

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter6: Photons And Matter Waves

Section: Chapter Questions

Problem 66P: The work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as...

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