CAPE Physics Unit 2 · 2008 (T&T) · Paper 1 · Question Q34

Item 34 refers to the following diagram. The graph above shows what happens when light of frequency 7.5 \times 10^{14}\text{ Hz} is incident on a metallic surface. The work function for the metal is

1. (A)1.6 \times 10^{-19}\text{ J}
2. (B)3.4 \times 10^{-19}\text{ J}
3. (C)5.0 \times 10^{-19}\text{ J}
4. (D)6.6 \times 10^{-19}\text{ J}

This question uses a figure or table from the paper — you'll see it when you practise.