4. The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of wavelength 350. nm, find (a) the maximum kinetic energy of the photoelectrons and (b) the cutoff wavelength.

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4. The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of
wavelength 350. nm, find (a) the maximum kinetic energy of the photoelectrons and (b) the cutoff
wavelength.
Transcribed Image Text:4. The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of wavelength 350. nm, find (a) the maximum kinetic energy of the photoelectrons and (b) the cutoff wavelength.
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