Question: The stopping potential for electrons emitted from a surface illuminated by light of wavelength 491 nm is 0.710 V. When the incident wavelength is changed

The stopping potential for electrons emitted from a surface illuminated by light of wavelength 491 nm is 0.710 V. When the incident wavelength is changed to a new value, the stopping potential is 1.43 V.
(a) What is this new wavelength?
(b) What is the work function for the surface?

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a We use the photoelectric effect equation Eq 385 in the form hc Km The work fun... View full answer

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