The Physics Question Bank

Specification: AQA A-level Physics (7408) 3.8 Nuclear physics  |  Paper: 2  |  Data and formulae booklet: given in the exam

Every equation in section 3.8 has its own page: key definitions, the equation with units, and 10 ramped questions from core to stretch, each with a full worked solution. Closest approach of an alpha particle is on the electric potential page.

🛒 All the equations in one place: the AQA A-level Every Key Equation PowerPoint has 127 equations, 381 practice questions and 15 derivations, for £12.

• Inverse square law for gamma radiation: I = k/x² (3.8.1.2)
• Activity and the decay constant: A = λN (3.8.1.3)
• Exponential decay: N = N₀e^−λt (3.8.1.3)
• Half-life: T½ = ln 2/λ (3.8.1.3)
• Nuclear radius: R = R₀A^1/3 (3.8.1.5)
• Mass defect and binding energy: E = mc² (3.8.1.6)

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