The work function for silver is $4\mathrm{.}73$ eV$.$

$($a$)$ Find the cutoff wavelength for silver.

nm

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

Hz

$($c$)$ If photons of energy $6\mathrm{.}65$ eV are incident on silver, what is the maximum kinetic energy of the ejected photoelectrons?

eV