A-LevelPhysicsNuclear physics9702/12 · Oct/Nov 2013 · Q391 Mark
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?
Ausing α-particles with greater kinetic energy
Busing a foil made of a metal with fewer protons in its nuclei
Cusing a double thickness foil
Dusing an alpha source with a higher activity
✓ Correct answer
C: using a double thickness foil
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