How to Use IB Physics Topic Questions

IB Physics topic questions are most effective when used as a diagnostic cycle: attempt a small set without notes, mark it carefully, identify the reason for each lost mark, review only the necessary theory, and then retest the same skill with a different question. This approach develops application and problem-solving rather than familiarity from repeatedly reading notes.

The current IB Physics course, first assessed in 2025, is organized into five themes: space, time and motion; the particulate nature of matter; wave behaviour; fields; and nuclear and quantum physics. Topic-level practice should follow these current syllabus divisions and eventually prepare you for Paper 1A multiple-choice questions, Paper 1B data-based questions, and Paper 2 short- and extended-response questions.

Why topic questions improve IB Physics revision

Physics exams do not simply test whether you recognize an equation. You must select an appropriate model, interpret unfamiliar information, show valid working, manage units and uncertainties, and communicate physical reasoning precisely.

The official IB Physics subject brief identifies assessment objectives involving knowledge, application, and the analysis, evaluation, and synthesis of data and experimental procedures. Topic questions let you isolate these skills before facing an entire mixed paper.

They are particularly useful for distinguishing between four different problems:

• Knowledge gap: you do not know the relevant principle or definition.
• Recognition gap: you know the principle but do not identify when it applies.
• Execution gap: you choose the correct method but make an algebra, unit, graph, or calculator error.
• Communication gap: your reasoning is correct, but your written answer does not satisfy the command term or mark allocation.

A score alone cannot tell you which problem occurred. Effective revision therefore depends on analysing your method, not merely counting correct answers.

Organize practice by the current syllabus

Use a question bank mapped to the syllabus first assessed in 2025. Older resources may use numbered topics, optional units, and Paper 3, so check that each question still matches your course.

The official IB Physics curriculum page provides the authoritative overview. RevisionDojo’s IB Physics Questionbank allows you to select individual syllabus topics, while the broader IB Physics resource hub connects questions with notes and other revision materials.

A five-step topic-question method

1. Begin with a diagnostic set

Attempt five to eight questions before reviewing the chapter. Include a conceptual item, a calculation, and a graph or data question where the topic permits.

Work without notes, but use the resources permitted by the question format. Do not look at the solution after every item because this can turn the next attempt into imitation rather than retrieval.

2. Mark for evidence, not just answers

Compare every line with the answer key or worked solution. A correct final value may conceal invalid reasoning, while a numerical slip may occur after an otherwise sound method.

Check the following separately:

• equation or physical principle selected
• substitutions and algebra
• units, significant figures, and direction
• graph axes, gradient, intercept, and uncertainty treatment
• command term and depth of explanation

The official Physics specimen papers and markschemes show how the current papers frame questions and award marks.

3. Build a specific error log

Avoid entries such as “revise momentum.” Record an actionable diagnosis instead, such as “treated momentum as a scalar,” “forgot that external impulse changes system momentum,” or “did not state that kinetic energy is transformed during an inelastic collision.”

Use four columns: question skill, error type, correction, retest date. This converts marking into a revision plan.

4. Repair only the identified weakness

Return to notes for the smallest necessary section. Write down the governing principle, its conditions, one useful diagram, and one worked example rather than copying a whole chapter.

For example, if wave questions reveal confusion between frequency and wave speed, use the C.2 Wave Model resources before attempting a fresh set. Jojo AI can help explain why a method failed, but you should then solve another question independently.

5. Retest after a delay

Complete a different question on the same skill after two or three days. Immediate success after reading a solution may reflect short-term memory, so delayed retrieval provides stronger evidence of learning.

Once individual topics are secure, progress through mixed-theme sets, timed sections, and complete papers. The IB Physics topic-by-topic revision guide explains this progression in greater detail.

Difficulty tags and progression

Difficulty should describe the thinking required, not simply the number of marks.

Start with foundation questions only when a topic is insecure. A balanced set should soon contain mostly standard questions with one or two advanced tasks. HL students must also filter for additional higher level content rather than assuming every question within a theme is common to both levels.

Topic-level practice set: mechanics

Attempt this set without reading the answers. The questions are original practice items designed to demonstrate a useful mixture of demands rather than reproduce an official examination.

1. [Foundation, Paper 1A] A ball is thrown vertically upward with negligible air resistance. Which statement is correct at its highest point?
   A. Its velocity and acceleration are zero.
   B. Its velocity is zero and its acceleration is downward.
   C. Its velocity is upward and its acceleration is zero.
   D. Its velocity and acceleration are downward.

2. [Foundation, Paper 2] A 2.0 kg block experiences an 8.0 N horizontal driving force and a 2.0 N frictional force. Calculate its acceleration.

3. [Standard, Paper 1B] The velocity of an object increases uniformly from 2.0 m s⁻¹ at 0 s to 14.0 m s⁻¹ at 4.0 s. Determine the acceleration from the gradient of the velocity-time graph.

4. [Standard, Paper 2] A 0.20 kg object moving at 12 m s⁻¹ becomes embedded in a stationary 0.80 kg object. Determine their common velocity immediately after the collision.

5. [Standard, Paper 2] Calculate the kinetic energy transformed when a 1200 kg car is brought to rest from 20 m s⁻¹.

6. [Standard, Paper 2] Explain why a seat belt reduces the average force acting on a passenger during a collision.

7. [Advanced, Paper 1B] An object starts from rest and travels a distance of (0.800 ± 0.005) m in (0.50 ± 0.01) s with constant acceleration. Using s = ½at², calculate the acceleration and estimate its absolute uncertainty by adding fractional uncertainties.

8. [Advanced, Paper 2] A 0.50 kg trolley moving at 6.0 m s⁻¹ collides with a stationary 1.0 kg trolley, and they remain together. Determine their final speed and the kinetic energy transformed in the collision.

Go directly to the answer key.

Answer key

1. B. Instantaneous velocity is zero at the highest point, but gravitational acceleration remains directed downward.
2. Resultant force = 8.0 - 2.0 = 6.0 N. Therefore, a = F/m = 6.0/2.0 = 3.0 m s⁻².
3. a = Δv/Δt = (14.0 - 2.0)/4.0 = 3.0 m s⁻².
4. Momentum conservation gives (0.20 × 12) = (1.00)v, so v = 2.4 m s⁻¹ in the original direction.
5. ΔEk = ½mv² = ½ × 1200 × 20² = 2.4 × 10⁵ J.
6. The seat belt increases the time over which the passenger’s momentum changes. For the same change in momentum, a longer collision time produces a smaller average force because F = Δp/Δt.
7. a = 2s/t² = 2(0.800)/(0.50)² = 6.4 m s⁻². The fractional uncertainty is approximately 0.005/0.800 + 2(0.01/0.50) = 0.04625, or 4.6%, giving an absolute uncertainty of about 0.3 m s⁻². Report (6.4 ± 0.3) m s⁻².
8. Momentum conservation gives 0.50(6.0) = 1.50v, so v = 2.0 m s⁻¹. Initial kinetic energy is 9.0 J and final kinetic energy is 3.0 J, so 6.0 J is transformed.

Common mistakes when using topic questions

Do not read solutions before making a genuine attempt. Recognition feels easier than independent problem-solving and can create false confidence.

Also avoid practising one calculation pattern repeatedly. The current assessment includes multiple-choice, data-based, short-response, and extended-response tasks. The IB’s Physics curriculum update confirms that Paper 1 and Paper 2 assess these different formats, with no separate option paper.

Finally, do not remain in topic mode until the examination. Topic labels tell you which model to use, but a mixed paper does not. Move to resources such as RevisionDojo’s Physics Paper 1A practice and solutions once you can solve individual topics reliably.

Conclusion

IB Physics topic questions should form a repeated cycle of diagnosis, independent practice, careful marking, targeted repair, and delayed retesting. Classify errors by their cause, practise several examination formats, and gradually progress from single topics to mixed and timed papers.

RevisionDojo can support this process through the Physics Questionbank, syllabus-mapped Study Notes, worked solutions, and Jojo AI explanations. Begin with a short topic set, maintain an error log, and use Mock Exams or paper-format practice only after your individual weaknesses have been addressed.

Sources and referenced URLs

• Official IB Physics curriculum page
• Official IB Physics subject brief, first assessment 2025
• Official IB Physics curriculum update
• Official IB Physics specimen papers and markschemes
• RevisionDojo IB Physics Questionbank
• RevisionDojo IB Physics resources
• RevisionDojo C.2 Wave Model resources
• RevisionDojo IB Physics topic-by-topic revision guide
• RevisionDojo Physics Paper 1A practice and solutions