Physics

Problem

Photons of energy

5.3\times10^{-19}\,\text{J}

strike a metal whose work function is

1.9\,\text{eV}

(1\,\text{eV}=1.6\times10^{-19}\,\text{J})

Find the maximum kinetic energy of the emitted electrons in electron-volt. a)

0.88\ \text{eV}

3.3\ \text{eV}

1.4\ \text{eV}

1.9\ \text{eV}