IB Physics topic-by-topic revision works best as a repeated cycle: learn one syllabus unit, answer targeted questions without help, review worked solutions, classify every error, and retest the exact weakness. This is more effective than repeatedly reading notes because it reveals whether you can apply physics under exam conditions.
The current course, first assessed in 2025, is organized into five themes rather than the numbered topics and optional units used in the previous syllabus. This guide explains what to revise in each theme, how to use past-paper-style questions responsibly, and when to progress from isolated topics to mixed and timed papers.
Know the current IB Physics course structure
The official IB subject brief organizes Physics into five themes. SL and HL students share much of the conceptual foundation, but HL includes additional content and greater mathematical depth.
| Theme | Core areas to revise | Important HL additions |
|---|---|---|
| A: Space, time and motion | Kinematics; forces and momentum; work, energy and power | Rigid body mechanics; Galilean and special relativity |
| B: The particulate nature of matter | Thermal energy transfers; greenhouse effect; gas laws; current and circuits | Thermodynamics |
| C: Wave behaviour | Simple harmonic motion; wave models; wave phenomena; standing waves and resonance; Doppler effect | Greater mathematical treatment within several subtopics |
| D: Fields | Gravitational fields; electric and magnetic fields; motion in electromagnetic fields; induction | Wider field models and more demanding applications |
| E: Nuclear and quantum physics | Atomic structure; quantum physics; radioactive decay; fission; fusion and stars | Additional quantum physics depth |
Do not build a revision plan from an old guide without checking it against the current syllabus. The revised course has no separate option topics, and students take two external examination papers.
Paper 1 contains Paper 1A multiple-choice questions and Paper 1B data-based questions. Paper 2 contains short-answer and extended-response questions, while the scientific investigation contributes the remaining internal assessment component. For both SL and HL, the published weightings are 36% for Paper 1, 44% for Paper 2, and 20% for the scientific investigation.
Use a five-stage revision cycle for every topic
A topic is not finished when you recognize its formulas. It is secure when you can identify an unfamiliar physical situation, choose an appropriate model, complete the mathematics, and communicate a justified answer.
1. Diagnose before reviewing
Begin each unit with three to five short questions. Include at least one conceptual question, one calculation, and one graph or data task where appropriate.
Record what stopped you:
- Knowledge gap: a definition, law, assumption, or equation was unknown.
- Model gap: you did not recognize which physical model applied.
- Mathematical gap: algebra, vectors, logarithms, gradients, or proportional reasoning failed.
- Interpretation gap: you misread a graph, diagram, sign convention, or data table.
- Communication gap: your reasoning did not satisfy the command term.
This diagnosis prevents you from spending equal time on material that is already secure.
2. Rebuild the minimum necessary theory
Use concise IB Physics revision notes or the Physics cheatsheets to repair the identified gap. Do not copy an entire chapter. Write only the governing principle, conditions under which it applies, a diagram if useful, and one representative example.
Keep the IB Physics data booklet resource beside you. Learn where equations are located and what each symbol means, but remember that selecting and applying an equation is still your responsibility.
3. Complete targeted questions without support
Open the IB Physics Questionbank and filter practice by the unit you have just studied. A productive set contains varied demands rather than ten nearly identical substitutions.
For example, an A.1 kinematics set could include:
- interpreting displacement-time and velocity-time graphs;
- selecting a sign convention;
- applying constant-acceleration equations;
- resolving projectile velocity into components;
- explaining the qualitative effect of fluid resistance.
The dedicated A.1 Kinematics questionbank illustrates how narrowly targeted practice can expose a precise weakness. Work without notes first, show substitutions and units, and mark uncertain steps even if your final answer happens to be correct.
4. Review with worked and video solutions
A markscheme indicates where credit is awarded, but a worked solution explains how to construct the reasoning. After attempting each question, compare your diagram, equation choice, substitutions, significant figures, units, and written explanation with the demonstrated method.
Use RevisionDojo's Physics videos and per-question solution support for anything shaky. Pause before each step and predict what should happen next. If the solution uses a method you did not recognize, write a short trigger such as, “When asked for energy lost, compare initial and final mechanical energy.”
Jojo AI can help clarify why a step is valid, but do not replace your attempt with an AI-generated answer. The learning occurs when you compare your own reasoning with the worked method.
5. Retest the exact gap
Return to the same skill after two or three days using a different question. A correct answer immediately after watching a solution may reflect short-term imitation rather than durable understanding.
Mark a topic secure only when you can solve several varied questions without prompts. Continue to revisit it through mixed practice so that you also learn to identify the topic when no heading tells you which equation to use.
Revise each theme according to its demands
Different parts of Physics require different revision methods.
| Theme | Best revision emphasis | Common weakness to check |
|---|---|---|
| A | Diagrams, vectors, conservation laws, graph interpretation | Treating vector quantities as scalars |
| B | Microscopic explanations, energy transfers, circuit models | Applying equations without checking assumptions |
| C | Sketches, phase relationships, superposition, proportional reasoning | Confusing amplitude, intensity, frequency, and speed |
| D | Field diagrams, direction rules, potential and energy | Mixing field strength with potential |
| E | Energy-level diagrams, decay mathematics, evidence-based explanations | Using classical reasoning where a quantum model is required |
Across all themes, practise experimental analysis. Paper 1B can assess graphing, units, uncertainties, and interpretation of data, so these skills should not be left until the end of the course.
Move from topic practice to full-paper readiness
Topic-by-topic work builds accuracy, but final examinations mix ideas. Once most individual units are secure, use this progression:
- Single-topic sets: develop one method at a time.
- Mixed-theme sets: identify the relevant model without being told the topic.
- Timed paper sections: practise decisions under realistic time pressure.
- Complete papers: develop stamina, pacing, and recovery after difficult questions.
- Post-paper repair: return to targeted questions for every repeated weakness.
Use official specimen questions and school-provided or otherwise properly licensed past papers. The IB's official specimen paper shows the structure of Papers 1A, 1B, and 2 under the current syllabus. RevisionDojo's Physics predicted papers can provide additional paper-format practice, but predicted questions are practice resources, not forecasts of guaranteed examination content.
Build a practical weekly schedule
A sustainable week should combine new material, retrieval, question practice, and cumulative review.
| Session | Main task |
|---|---|
| 1 | Diagnose and review one subtopic |
| 2 | Complete targeted Paper 1A and short-response questions |
| 3 | Complete data-based or extended-response questions |
| 4 | Review worked solutions and update the error log |
| 5 | Retest weak skills and complete a mixed timed set |
Keep an error log with the topic, question type, cause of the error, correct principle, and retest date. “Careless mistake” is usually too vague. Identify whether the real cause was a missing unit, incorrect sign, premature rounding, unsupported explanation, or failure to read the axis.
Common revision mistakes
Avoid these patterns:
- Reading instead of retrieving: recognition is easier than producing an answer independently.
- Watching solutions before attempting questions: this creates familiarity without testing problem solving.
- Practising only calculations: IB Physics also assesses explanations, data analysis, assumptions, and evaluation.
- Ignoring incorrect working after reaching the right answer: accidental success will not transfer reliably.
- Staying topic-by-topic until the examination: students must eventually recognize connections across themes.
- Using old syllabus labels uncritically: check that every resource matches the course first assessed in 2025.
Conclusion
Effective IB Physics topic-by-topic revision is a diagnostic process, not a sequence of chapter summaries. Study one syllabus unit, attempt targeted questions independently, inspect worked and video solutions, record the precise error, and retest that skill before moving into mixed papers.
RevisionDojo can support this cycle through syllabus-mapped notes, the Physics Questionbank, Jojo AI explanations, and IB Physics resources. Begin with targeted questions, then use the per-question video solutions for anything that remains uncertain before progressing to timed papers.
Sources and referenced URLs
- IB Physics subject brief
- Official IB Physics curriculum page
- Official IB Physics curriculum updates
- Official IB Physics specimen papers for first examinations in 2025
- IB Diploma sample examination papers
- RevisionDojo IB Physics resources
- RevisionDojo IB Physics Questionbank
- RevisionDojo A.1 Kinematics Questionbank
- RevisionDojo IB Physics revision notes
- RevisionDojo Physics cheatsheets
- RevisionDojo IB Physics data booklet resource
- RevisionDojo Physics videos
- RevisionDojo Physics predicted papers