AQA•A-Level•Physics
⚛️
Particles and Radiation
Atomic structure, particle physics and quantum phenomena
Practice 74 subtopics in Particles and Radiation. All questions match the AQA A-Level specification.
About Particles and Radiation
Particles and Radiation is a key topic in the AQA A-Level Physicsspecification. This topic covers atomic structure, particle physics and quantum phenomena.
Master all 74 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (74)
🎲
Random Practice
Practice any subtopic from Particles and Radiation
Proton, neutron and electronSpecific charge of particlesProton number Z and nucleon number AIsotopes and nuclide notationThe strong nuclear forceRange of the strong force (~3 fm)Alpha decay and nuclear equationsBeta-minus decay: neutron to protonBeta-plus decay: proton to neutronNeutrinos and antineutrinos in beta decayAntimatter and antiparticlesPositron as antielectronAntiproton and antineutronPhotons and electromagnetic radiationPhoton energy: E = hf = hc/λElectronvolt (eV) as energy unitAnnihilation: particle-antiparticlePair production from photonsThreshold energy for pair productionFundamental forces: strong, weak, electromagnetic, gravitationalExchange particles for forcesVirtual photons in electromagnetic interactionsW bosons in weak interactionsGluons in strong interactionsGravitons (theoretical)Feynman diagrams for interactionsBeta decay Feynman diagramsElectron captureElectron-proton collisionsHadrons: particles affected by strong forceBaryons: protons, neutrons and their antiparticlesBaryon number conservationMesons: pion and kaonPion as exchange particleKaons and strangenessLeptons: electron, muon, tau and neutrinosLepton number conservationMuon decayQuark model: up, down, strangeQuark charges: +2/3e and -1/3eQuark composition of protons (uud)Quark composition of neutrons (udd)Quark composition of pionsQuark composition of kaonsAntiquarks and their propertiesQuark confinementConservation of chargeConservation of baryon numberConservation of lepton numberConservation of strangeness (strong only)Strangeness change in weak interactionsAnalysing particle interactionsPhotoelectric emissionThreshold frequencyWork function φPhotoelectric equation: hf = φ + Ek(max)Stopping potentialWave-particle duality evidenceFailure of wave theory to explain photoelectric effectIonisation by electron collisionExcitation by electron collisionIonisation energyExcitation energyFluorescent tubes operationDiscrete energy levels in atomsGround state and excited statesPhoton emission from transitionsEnergy level diagramsLine spectra and energy levelsAbsorption spectrade Broglie wavelength: λ = h/p = h/mvElectron diffractionWave nature of particlesParticle nature of waves
Start Practicing Particles and Radiation
Choose any subtopic above to begin practicing with unlimited AI-generated questions.
Start with Proton, neutron and electron