1a. Electrons are ejected from a metal surface with speeds ranging up to 4.65E+5m/s when light with a wavelength of lambda = 638nm is used. What is the work function (in eV) of the surface? 1.94 eV Submit Answer Incorrect. Tries 1/10 Previous Tries 1b. What is the cutoff frequency for this surface? Submit Answer Tries 0/10

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1a. Electrons are ejected from a metal surface with speeds
ranging up to 4.65E+5m/s when light with a wavelength of
lambda 638nm is used. What is the work function (in eV)
of the surface? 1.94 eV
Submit Answer
Incorrect. Tries 1/10 Previous Tries
1b. What is the cutoff frequency for this surface?
Submit Answer Tries 0/10
Transcribed Image Text:1a. Electrons are ejected from a metal surface with speeds ranging up to 4.65E+5m/s when light with a wavelength of lambda 638nm is used. What is the work function (in eV) of the surface? 1.94 eV Submit Answer Incorrect. Tries 1/10 Previous Tries 1b. What is the cutoff frequency for this surface? Submit Answer Tries 0/10
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