Physics

Problem

Light emitted from a metal surface has a measured frequency of

7.85\times10^{14}\,\text{s}^{-1}

. Determine the energy of each emitted photon in electronvolts (eV). (Planck constant

h = 6.626\times10^{-34}\,\text{J\,s}

;

1\,\text{eV} = 1.602\times10^{-19}\,\text{J}

)