The work function for platinum is 6.35 eV.

(a) Find the cutoff wavelength for platinum.

=_________nm

(b) What is the lowest frequency of light incident on platinum that releases photoelectrons from its surface?

=______________Hz

(c) If photons of energy 7.67 eV are incident on platinum, what is the maximum kinetic energy of the ejected photoelectrons?

=_______________eV

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