CAPE Physics Unit 2 · 2014 · Paper 1 · Question Q33

A metal surface has a work function of 3.8\text{ eV}. Determine the threshold wavelength for this metal.

1. (A)9.17 \times 10^{-14}\text{ m}
2. (B)3.27 \times 10^{-7}\text{ m}
3. (C)6.08 \times 10^{-7}\text{ m}
4. (D)1.09 \times 10^{15}\text{ m}