Physics

Problem

A material has a work function of

3.2\,\text{eV}

. Which of the following is closest to its threshold wavelength? a)

2.5\times10^{2}\,\text{nm}

6.2\times10^{2}\,\text{nm}

3.9\times10^{2}\,\text{nm}

3.9\times10^{1}\,\text{nm}