HY 232-The work function of a certain metal is

PHY 232-The work function of a certain metal is

Subject: Physics / General Physics
Question
A) The work function of a certain metal is ? = 2.35 eV. Determine the minimum frequency of light f0 for which photoelectrons are emitted from the metal. (Planck’s constant is: h = 4.1357×10-15 eVs.)
5.68×1014 Hz

B) Determine the corresponding wavelength of light. (Possibly useful constant: hc = 1240 eVnm.)
5.28×102 nm

C) Calculate the kinetic energy of the emitted electrons if the frequency of the photons is doubled to 2f0.

???

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