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Specification: AQA A-level Physics (7408) 3.2 Particles and radiation  |  Paper: 1  |  Data and formulae booklet: given in the exam

Every equation in section 3.2 has its own page: key definitions, the equation with units, and 10 ramped questions from core to stretch, each with a full worked solution.

🛒 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.

• Specific charge (3.2.1.1)
• Photon energy: E = hf = hc/λ (3.2.1.3)
• Annihilation and pair production (3.2.1.3)
• Photoelectric effect: hf = φ + Eₖ(max) (3.2.2.1)
• Energy levels: hf = E₁ − E₂ (3.2.2.3)
• de Broglie wavelength: λ = h/mv (3.2.2.4)

Examiners repeatedly flag the MeV to joules conversion (it needs both the 10⁶ and the 1.60 × 10⁻¹⁹) and answers that mention the threshold frequency without explaining it.

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