Question
Electrons are ejected from a surface with speeds ranging up to 789 km/s when light with a wavelength of 494 nm is used. What is
Electrons are ejected from a surface with speeds ranging up to 789 km/s when light with a wavelength of 494 nm is used. What is the work function of this surface? The speed of light is 2.99792 108 m/s and Planck's constant is 6.62607 1034 J s. Answer in units of eV.
2. What is the threshold frequency for this surface? Answer in units of Hz.
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University Physics with Modern Physics
Authors: Hugh D. Young, Roger A. Freedman, Lewis Ford
12th Edition
978-0321501479, 9780805321876, 321501470, 978-0321501219
