How Are the IB Physics Exam Papers Structured?

IB Physics has three papers. Paper 1 is multiple-choice on core (and AHL for HL) content. Paper 2 has short-answer and extended-response questions on the same material. Paper 3 covers experimental/data skills plus your chosen option topic. Together with the 10-hour internal assessment, these make up 100% of your final grade.

At SL, you sit roughly 3 hours across three papers: 45 minutes, 1 hour 15 minutes, and 1 hour. At HL it's about 4.5 hours total: 75 minutes, 2 hours 15 minutes, and 75 minutes. Add reading time per paper — 5 minutes at SL/HL for each session, non-writing.

Paper 1 is entirely multiple choice — 40 questions at SL, 40 at HL (including AHL-only content), each worth one mark, no penalty for wrong answers. There's no calculator restriction change; you use your normal GDC. It tests breadth across the whole core syllabus rather than depth on any one topic.

Paper 2 mixes short-answer and extended-response questions covering the core syllabus (SL) or core plus AHL (HL). Expect calculation-heavy questions, graph analysis, and at least one longer structured question worth 8-12 marks that walks through a real-world scenario, like projectile motion or a circuit analysis.

Paper 3 has two sections. Section A tests experimental and data-based skills using unfamiliar practical scenarios — reading graphs, calculating uncertainties, identifying variables. Section B examines your chosen option topic (such as Astrophysics or Engineering Physics) in more depth, with structured questions similar in style to Paper 2.

Yes — HL Physics is one of the more demanding DP science courses because of the extra AHL topics (like relativity and quantum mechanics thresholds) layered onto a maths-heavy core. Most of the difficulty comes from Paper 2's extended calculations, not Paper 1's multiple choice.

Your final grade (1-7) combines three exam papers and the internal assessment using weighted percentages set by the IB, then converted through grade boundaries published after each session. Grade boundaries shift slightly year to year depending on overall cohort performance and paper difficulty.

Work through past-paper style extended-response questions topic by topic, not randomly. Start with mechanics and electricity since they underpin later topics, then time yourself on full past papers once you've covered the syllabus. Always mark your own work against the official markscheme, not just check the final number.

Calculate, determine, and state dominate Paper 1 and 2; explain and discuss appear more in Paper 3's option section. Each command term has a specific mark allocation logic — 'calculate' wants a numerical answer with working, while 'explain' needs a reasoned chain of physics logic, not just a fact.

No — your school picks one option topic (Astrophysics, Engineering Physics, Relativity, or Quantum and Nuclear Physics) and both SL and HL students study it, but HL students go into more depth on the same option in Paper 3, Section B, with extra AHL-level content.

The IA is a single scientific investigation, written up in roughly 12 pages, worth 20% of your final grade at both SL and HL. It's marked against IB criteria covering research design, data analysis, and evaluation — not against how 'impressive' the experiment sounds.

They're different rather than simply harder or easier. IB Physics HL covers a similarly demanding syllabus to A-Level Physics but spreads assessment across three exam papers plus a mandatory IA, whereas A-Level relies on final exams with an optional practical endorsement rather than a graded coursework component.

Past papers marked against official markschemes remain the single most reliable predictor of exam performance, alongside topic-by-topic revision notes that isolate weak areas before a full timed paper. Costs vary — official IB past papers are typically purchased per session, while curated topical practice is often available as a one-off resource bundle.