Light and atoms
Practise light, quantum behaviour, atoms and particle physics.
Subtopics
Electromagnetic waves and polarisation
Calculate wavelengths and apply oscillating-charge and antenna-polarisation rules.
Not attempted8 questionsCoherence, phase and superposition
Classify interference using path difference and combine signed wave amplitudes.
Not attempted8 questionsYoung’s double-slit fringes
Calculate fringe spacing, wavelength and orders using the small-angle approximation.
Not attempted8 questionsDiffraction gratings and spectra
Convert line density into slit spacing and calculate angular orders.
Not attempted8 questionsPhoton energy and momentum
Calculate photon quantities and distinguish individual photon energy from beam intensity.
Not attempted8 questionsPhotoelectric thresholds and stopping voltage
Apply Einstein’s energy equation and interpret linear photoelectric data.
Not attempted8 questionsX-ray tubes and spectral features
Calculate spectral cutoffs and identify how tube controls change X-ray output.
Not attempted8 questionsde Broglie waves and electron diffraction
Calculate matter wavelengths and identify the evidence requiring wave behaviour.
Not attempted8 questionsContinuous and line spectra
Classify spectra and match line patterns to element identities.
Not attempted8 questionsAtomic transitions, hydrogen and ionisation
Use energy-level differences to calculate photon energies and classify transitions.
Not attempted8 questionsFluorescence, stimulated emission and lasers
Classify emission processes and apply population-inversion and photon-energy rules.
Not attempted8 questionsQuarks, leptons and force carriers
Classify particles and calculate charges of baryons, mesons and antiparticles.
Not attempted8 questionsConservation rules and annihilation
Balance charge, baryon and lepton numbers and calculate annihilation energy.
Not attempted8 questions