Physics Quiz — 500 Questions
An interactive 500-question physics quiz covering nine topics at three difficulty levels:
- Classical mechanics — kinematics, dynamics, energy, momentum, rotational motion.
- Quantum mechanics — wavefunctions, operators, atomic structure, photons.
- Astrophysics — stars, galaxies, dark matter, CMB.
- Electromagnetism — fields, Maxwell's equations, circuits.
- Thermodynamics — heat, entropy, the four laws.
- Waves & optics — interference, diffraction, lenses, sound.
- Nuclear & particle physics — decays, the Standard Model.
- Medical physics — imaging, dosimetry, ultrasound.
- Relativity — special and general, GPS, gravitational waves.
Each question is followed by a detailed explanation citing the relevant formula or experiment.
The quiz is also accessible from each topical silo: filter by topic and difficulty.
Start a quiz
How to use the quiz for study
The quiz is intended as retrieval practice, not as a replacement for worked problems. A useful session is short: choose one topic, answer a small set of questions, then write down the reason for every missed answer. The explanation after the question should be read actively, with the relevant formula or definition copied into your notes.
For mechanics questions, check whether the problem asks for a force, an acceleration, a momentum change, an energy change, or a time interval. Many wrong answers come from choosing the nearest-looking equation before identifying the physical quantity. For electromagnetism, watch the direction of fields and currents; for thermodynamics, track the system boundary and sign convention.
Difficulty levels
Introductory questions test definitions, units, and direct substitution. Intermediate questions combine two ideas, such as work and kinetic energy or pressure and force. Advanced questions ask for interpretation: what assumption was made, what limiting case should hold, or which measurement would distinguish two models.
A good review loop is to pair the quiz with the formula library, the glossary, and the calculator library. If a missed question involves a numerical relation, work a similar example in a calculator and check whether changing one input changes the answer in the expected direction.
The goal is not merely a high score. The goal is to build fast recognition of the model, units, assumptions, and common failure modes behind each topic.
Where to go next
Review after each attempt
After a quiz attempt, sort missed questions into three groups: definition errors, equation-choice errors, and assumption errors. Definition errors need glossary review. Equation-choice errors need a nearby worked example. Assumption errors need slower reading, because the issue is often hidden in words such as ideal, isolated, uniform, elastic, reversible, or negligible.
Students can also use the quiz as a diagnostic map. If mechanics misses cluster around forces, review Newton's laws and free-body diagrams before attempting energy problems. If waves misses cluster around phase, review interference and path difference before moving to diffraction or standing waves.