Sunlight, whose visible wavelengths range from 380 to 750 nm, is incident on a sodium surface. The
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Question:
Sunlight, whose visible wavelengths range from 380 to 750 nm, is incident on a sodium surface. The work function for sodium is W0 = 2.28 eV. Find (a) the maximum kinetic energy KEmax of the photoelectrons emitted from the surface and (b) the longest wavelength that will cause photoelectrons to be emitted.
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