CAPE Physics Unit 2 · 2007 · Paper 1 · Question Q34

The maximum wavelength of electromagnetic radiation that causes emission of photoelectrons from a metal, X, is 600\text{ nm}. What is the work function of X?

1. (A)3.32 \times 10^{-19}\text{ J}
2. (B)5.30 \times 10^{-19}\text{ J}
3. (C)3.98 \times 10^{-19}\text{ J}
4. (D)2.48 \times 10^{-21}\text{ J}