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