O-LevelPhysicsNuclear Physics5054/11 · May/June 2022 · Q401 Mark

In the Geiger-Marsden experiment, alpha-particles are fired at a thin gold sheet. Most alpha-particles pass straight through the thin gold sheet. A few are deflected. What can be deduced from this experiment?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AThe nucleus is very small.

BThe nucleus has no charge.

CElectrons surround the nucleus.

DElectrons have a negative charge.

✓ Correct answer

A: The nucleus is very small.

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Topic: Nuclear Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2022 Paper 1 Variant 1, question 40.

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