Physics (AS & A Level) · Oct / Nov 2021 · Paper 13 · Question 38

When α-particles are fired at a thin metal foil, most of the particles pass straight through but a few are deflected by a large angle. Which change would increase the proportion of α-particles deflected by a large angle?

1. Ausing α-particles with greater kinetic energy
2. Busing a double thickness foil
3. Cusing a foil made of a metal with fewer protons in its nuclei
4. Dusing a source emitting more α-particles per unit time

As printed in the paper