(b) The first equation displayed above yields Φ=−=⋅−=hcKmλ1112404910 710182eV nmnmeVeV...19. (a) We use the photoelectric effect equation (Eq. 38-5) in the form hc/λ= Φ+ Km. The work function depends only on the material and the condition of the surface, and not on the wavelength of the incident light. Let λ1be the first wavelength described and λ2be the second. Let Km1= 0.710 eV be the maximum kinetic energy of electrons ejected by light with the first wavelength, and Km2= 1.43 eV be the maximum kinetic energy of
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.