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O-LevelPhysicsNuclear Physics5054/12 · Oct/Nov 2015 · Q401 Mark

In the Geiger-Marsden experiment, a beam of alpha-particles is fired at a very thin sheet of gold foil, in a vacuum. What is deduced from this experiment?

AAlpha-particles are repelled by electrons.
BAtoms contain air.
CElectrons are found in atomic nuclei.
DNuclei are much smaller than atoms.

✓ Correct answer

D: Nuclei are much smaller than atoms.

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About this question

Topic
Nuclear Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source
O-Level Physics, Oct/Nov 2015 Paper 1 Variant 2, question 40.

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