IB Physics Grade Calculator 2026

An IB Physics grade prediction is useful only when it changes what you do next. A single percentage can tell you where a set of marks sits against one historical boundary, but it cannot tell you whether your mechanics is secure, whether your uncertainty work is costing easy marks, or whether a strong internal assessment is disguising weak examination performance. Use the result at the top of this page as a diagnostic starting point. Then inspect the component contributions, identify where one extra raw mark has the greatest practical value, and turn that evidence into a weekly study plan.

This guide is written for students taking the current Diploma Programme Physics course in a 2026 examination session. That distinction matters. The course first assessed in 2025 has Paper 1A, Paper 1B, Paper 2 and a scientific investigation. Older Physics resources may still refer to Paper 3, option topics or an earlier practical-work model. Those materials can remain useful for practising individual ideas, but their assessment structure and historical boundaries should not be used to predict a 2026 subject grade.

How to use the IB Physics grade calculator

1. Select SL or HL. The Paper 1A and Paper 2 raw-mark maxima change with level. Paper 1B and the scientific investigation retain maxima of 20 and 24 marks respectively.
2. Choose a boundary reference. November 2025 is the newest complete session included here. May 2025 is also available because it was the first examination session for this syllabus. Pick the session and zone most useful for comparison, but do not treat it as a promise about 2026.
3. Enter raw marks for every component. If a school mock gives you a percentage, convert it back to the correct raw maximum before entering it. For example, 70% on SL Paper 2 is \(0.70\times 50=35\) marks.
4. Read the weighted total. The calculator scales each component by its share of the final grade. A raw mark is not worth the same amount in every component.
5. Use the gap to the next boundary. The result tells you how many weighted marks separate your estimate from the next grade in the selected reference table. Build a safety margin instead of planning to land exactly on a historical cutoff.

For a complete Diploma Programme projection, calculate Physics here first and then place the resulting subject grade into the free IB score calculator. That broader tool answers a different question: how individual subjects and core points may combine toward the 45-point diploma total. This page focuses narrowly on Physics assessment components, raw marks and revision decisions.

IB Physics assessment in 2026

The 2026 examinations use the Physics course that began teaching in 2023 and was first assessed in 2025. External assessment contributes 80% of the subject grade, while the scientific investigation contributes 20%. The same headline weightings apply at SL and HL, although HL papers are longer and contain more marks because they assess both common and additional higher-level content.

Paper 1A and Paper 1B are presented separately but completed in the same Paper 1 sitting without an interruption. Calculators are permitted in the current Physics examinations, and candidates use a clean Physics data booklet. This differs from some advice written for the previous course. When you use older practice questions, separate the physics content from obsolete instructions about paper structure, calculator access or option topics.

The scientific investigation is an open-ended task in which you formulate a research question, gather and analyse data, reach a conclusion and evaluate the work. The official subject brief allocates 10 hours and sets a maximum overall report length of 3,000 words. The investigation is internally assessed by your teacher and externally moderated, so the mark entered above is best treated as provisional until moderation and final results are complete.

What disappeared from the previous syllabus?

There is no Paper 3 in the current model, and the former optional topics are no longer examined as a separate choice. Content is organized through five broad themes rather than the old sequence of numbered core topics plus options. This means a calculator built around Paper 1, Paper 2, Paper 3 and practical work from 2024 or earlier is structurally unsuitable for a 2026 candidate. It may produce a plausible-looking percentage, but it will be scaling the wrong components.

The revised structure also puts data analysis in a distinct Paper 1B booklet. That is not a signal to revise “data skills” in isolation during the final week. Graph interpretation, uncertainty, modelling and evaluation are tools that connect the whole course. A productive study system repeatedly applies them while revising mechanics, thermal physics, waves, fields and quantum ideas.

How the IB Physics weighted score is calculated

Each raw component mark is converted to a proportion of its maximum and multiplied by the component’s contribution to the final subject score. This page represents Paper 1’s total 36% as a 19% planning contribution for Paper 1A and a 17% planning contribution for Paper 1B, allowing the two separately reported marks to be entered without pretending their raw maxima are interchangeable. Paper 2 contributes 44% and the scientific investigation contributes 20%.

Here, \(S\) is the estimated weighted score out of 100; \(P_{1A}\), \(P_{1B}\), \(P_2\) and \(I\) are your raw marks; \(M_{1A}=25\) at SL or \(40\) at HL; and \(M_2=50\) at SL or \(90\) at HL. The resulting decimal is compared with the minimum thresholds in the selected final-grade boundary table.

Worked SL example

Suppose an SL student earns 18/25 on Paper 1A, 13/20 on Paper 1B, 36/50 on Paper 2 and 18/24 on the scientific investigation. The calculation is:

A weighted score of 71.41 would sit above every grade 7 threshold in the 2025 final-grade references included on this page. It does not guarantee a 7 in 2026 because a new session may set a different boundary, and moderation may change the investigation mark. It does show that the student has a meaningful margin relative to the available current-syllabus evidence.

Worked HL example

Now consider an HL student with 29/40 on Paper 1A, 13/20 on Paper 1B, 58/90 on Paper 2 and 19/24 on the investigation:

That estimate is a grade 6 under some included sessions and a grade 7 under others. This is exactly why a single historic cutoff should not become a psychological verdict. The useful conclusion is that the student is operating near a 6/7 boundary and should target a buffer of several weighted marks.

Raw marks and weighted marks are not the same

One additional raw mark changes the weighted total by a different amount in each component. At SL, one Paper 1A mark is worth \(19/25=0.76\) weighted marks, one Paper 1B mark is worth \(17/20=0.85\), one Paper 2 mark is worth \(44/50=0.88\), and one investigation mark is worth \(20/24\approx0.833\). At HL, the larger paper maxima mean one Paper 1A mark contributes \(19/40=0.475\) and one Paper 2 mark contributes \(44/90\approx0.489\), while Paper 1B and the investigation retain the same per-mark effect.

This arithmetic does not mean an HL student should ignore Paper 2 because an individual raw mark looks small. Paper 2 offers 90 opportunities and 44% of the grade. It means you should evaluate revision by expected gain: how many additional correct marks can a realistic block of practice produce? Repairing a repeated four-mark modelling error on HL Paper 2 is more valuable than spending the same time polishing a fact you already answer correctly.

Latest verified IB Physics grade boundaries

Grade boundaries translate the final weighted mark into the IB scale from 1 to 7. They are not fixed before an examination. The IB sets boundaries after reviewing evidence from the session, and different zones can have different thresholds. As of this page’s 2026 update, the newest complete Physics boundary table available for reliable comparison is November 2025. The calculator therefore defaults to N25 and also includes May 2025, the first session of the redesigned course.

Higher Level final-grade minimums

Standard Level final-grade minimums

The tables show the minimum weighted mark for each grade. For example, N25 TZ1 HL began grade 6 at 57 and grade 7 at 70. A score of 69 therefore remained a 6 in that reference. N25 TZ3 HL began grade 6 at 59 and grade 7 at 71. At SL, the N25 grade 7 thresholds were 69 and 70 for the two reported zones. The range across the included first-year sessions is a practical reminder to build a margin.

What safety margin should you use?

A sensible planning target is usually three to five weighted marks above the most demanding relevant recent boundary, not one decimal above the lowest historic threshold you can find. The exact buffer depends on the reliability of your evidence. A fully timed mock marked with the correct markscheme deserves more confidence than a paper completed with pauses, notes or generous self-marking. An investigation mark that has not been moderated also has uncertainty.

Do not average boundaries mechanically and call the result a “2026 boundary.” An average can help summarize the recent range, but it cannot model the difficulty of a paper that has not been graded. The calculator deliberately lets you inspect actual session references one at a time. If your estimate changes grade when you switch between them, treat your current position as borderline and plan accordingly.

Turn the calculator result into a revision plan

Start with evidence from one timed attempt at each relevant paper and your best current investigation estimate. Enter the marks, record the weighted total, and label the date and conditions. Repeat after a two- or three-week revision cycle. The trend matters more than a single result. A rising average with decreasing variation signals stronger control; a sequence such as 71, 56, 68 and 58 suggests topic dependence or inconsistent execution even though the mean looks respectable.

Use an error log that predicts future marks

An error log should do more than archive wrong answers. For each lost mark, record the theme, skill, cause and repair. Useful causes include conceptual misunderstanding, wrong model selection, algebra, calculator entry, units, significant figures, graph interpretation, missed command term, incomplete explanation and time pressure. Then add one specific action: redo three circular-motion questions, practise uncertainty propagation, or write two “explain” responses using claim–physics–evidence structure.

After several papers, count lost marks by cause. If 35% of your avoidable losses come from units and substitutions, another broad reading of the textbook is unlikely to be the best move. If almost all Paper 1A mistakes occur in fields and nuclear physics, target those themes. If Paper 1B is weak across every topic, the transferable issue may be graph reading or experimental reasoning rather than content recall.

Prioritize by expected weighted gain

Use a simple decision rule:

This is not meant to reduce learning to a perfect numerical optimization. It prevents two common mistakes: revising comfortable topics because success feels good, and spending days on one rare advanced problem while recurring basic errors remain. A high-priority task is both fixable and frequently tested. Examples include rearranging exponential relationships, resolving vectors, interpreting gradients, stating units, applying conservation laws and evaluating limitations with direction and mechanism.

Set process targets as well as grade targets

“Get a 7” is an outcome, not a daily instruction. Translate it into controllable behaviours: complete two timed Paper 1A sets per week; analyse one Paper 1B data set every three days; finish one mixed Paper 2 block each weekend; clear the error log within 48 hours; and revisit every corrected question one week later. A process target can be completed even when a difficult paper temporarily lowers your predicted grade.

If you use generative tools for explanations or quiz creation, keep verification central. The IB Physics prompt guide can help you request targeted Socratic questions, misconception checks and practice variations. Compare any generated formula, solution or syllabus claim with your current course documents and teacher guidance before learning from it.

How to improve Paper 1A

Paper 1A assesses multiple-choice questions: 25 at SL and 40 at HL. There is no benefit to leaving an answer blank when incorrect answers do not attract a penalty. The challenge is not simply speed. Strong performance requires rapid model recognition, controlled calculation, dimensional awareness and the discipline to reject attractive distractors.

Use a three-pass method

1. Pass one: secure marks. Answer questions whose model and route are immediately clear. Keep moving if a question starts consuming disproportionate time.
2. Pass two: calculated decisions. Return to questions that need multi-step algebra, a diagram or careful calculator work. Write enough working to catch sign and exponent errors.
3. Pass three: elimination and checking. Use units, limiting cases, proportionality and physical sense to narrow unresolved items. Confirm that every question has an answer.

Practise this method under realistic time constraints. A multiple-choice answer that takes eight minutes may be correct but operationally expensive. During review, distinguish questions you did not know from questions you knew but handled inefficiently.

Exploit units and limiting cases

Dimensional analysis can eliminate options without reproducing a full derivation. If a proposed period contains mass divided by a spring constant, then \(\sqrt{m/k}\) has units of seconds while \(m/k\) does not. Limiting cases are equally powerful. Ask what an expression predicts if resistance becomes very large, velocity approaches zero, or distance doubles. A candidate formula that violates obvious physics is unlikely to be correct.

For proportional reasoning, write the dependency before inserting numbers. If gravitational field strength follows \(g\propto 1/r^2\), doubling distance gives \(g^\prime=g/4\). If kinetic energy is \(E_k=\tfrac12mv^2\), doubling speed gives four times the kinetic energy. This approach reduces calculator use and makes distractors easier to identify.

Draw the smallest useful diagram

A free-body diagram, ray sketch, circuit annotation or vector triangle can turn a verbal problem into a recognizable model. Keep the diagram functional. Label forces on the object being analysed, choose axes that simplify resolution, and show directions before attaching signs. For field and potential questions, separate vector quantities from scalar quantities. For waves, mark phase relationships and path differences explicitly.

Build a retrieval-ready formula network

The Physics data booklet is a tool, not a substitute for understanding. You need to recognize which equation applies, what each symbol means, and the assumptions that make the relationship valid. Use the basic physics equations reference to strengthen the foundational network, then apply each relationship in mixed questions. For motion problems, the kinematic formulas guide is useful for revisiting constant-acceleration conditions and sign conventions.

A formula card should contain more than an equation. Add units, conditions, a rearrangement you commonly mishandle and one typical graph. For example:

These equations assume constant acceleration. If acceleration changes, reach for graph area, graph gradient or a calculus relationship rather than forcing a SUVAT equation onto the problem.

How to improve Paper 1B

Paper 1B focuses on data-based questions and is out of 20 at both levels. Students often underestimate it because the booklet is shorter than Paper 2. Its contribution is substantial, and its skills are unusually trainable. A disciplined routine for reading unfamiliar experiments can convert uncertainty into method marks.

Read the data before inventing a theory

Begin by identifying the independent variable, dependent variable, controls, units, measurement resolution and the physical system. Then inspect patterns. Is the relationship linear, inverse, inverse-square, exponential or periodic? Are there anomalous points? Does the uncertainty overlap? Only after this first pass should you decide which physical model best describes the evidence.

When asked for a gradient, use a large triangle on the best-fit line rather than two adjacent raw points. Include units derived from the axes. When asked for an intercept, state the scale and sign carefully. When the question asks what a gradient represents, connect the algebraic form to the plotted variables. If \(y=mx+c\) is created by plotting \(v^2\) against \(s\) for constant acceleration, compare it with \(v^2=u^2+2as\): the gradient is \(2a\), not \(a\).

Separate precision, accuracy and validity

Precision concerns the spread or resolution of measurements; accuracy concerns closeness to an accepted or true value; and validity concerns whether the method answers the stated research question. A sensor can be precise but systematically offset. Repeating readings can reduce random uncertainty but does not automatically remove calibration error. A conclusion can match theory while the experimental design remains too confounded to support it.

Write evaluations with mechanism

“Human error” is rarely a useful evaluation. Name the limitation, explain its directional or uncertainty effect, and give a feasible improvement. For example: heat loss to the surroundings means the electrical energy supplied exceeds the thermal energy gained by the sample, so a calculated specific heat capacity may be too high; improve insulation, use a lid, measure the cooling trend and apply an energy-loss correction. The mechanism is what turns a generic comment into physics.

Use this four-part structure:

1. Identify the specific limitation.
2. Explain how it changes a measured or calculated quantity.
3. State whether the effect is random, systematic or primarily a validity issue.
4. Propose a realistic change that addresses the named mechanism.

How to improve Paper 2

Paper 2 carries 44% of the final grade, the largest single assessment share. It combines short-answer and extended-response questions and tests whether you can construct a solution, not merely recognize one. The strongest revision therefore alternates between untimed reasoning practice and full timed execution.

Use a consistent solution architecture

For quantitative questions, train a visible sequence:

1. Define the system and draw a diagram if it reduces ambiguity.
2. List known quantities in SI units, keeping exact values during working.
3. State the governing principle or equation.
4. Rearrange symbolically before substituting where practical.
5. Calculate with sufficient internal precision.
6. Round at the end and attach the correct unit.
7. Check sign, magnitude, dimensions and limiting behaviour.

Visible working matters because one early arithmetic error need not destroy every later mark if the physics route remains clear. Avoid calculator-only solutions. A string of numbers without a defined equation makes it difficult to diagnose your own mistake and may not communicate the reasoning needed for method credit.

Respond to the command term

A calculation is not an explanation. “State” requires a concise answer; “determine” usually requires an obtained value or result; “explain” requires a causal chain using physics; “show that” requires working that reaches the supplied result without circular reasoning; “suggest” needs a plausible proposal grounded in the context; and “evaluate” asks for a reasoned judgment that considers evidence or limitations.

For explanation questions, a reliable structure is claim, law or model, application, consequence. Suppose the question asks why the current in a circuit decreases when a component heats. A strong response identifies the relevant resistance change, connects it to the microscopic or material behaviour expected in context, and uses the circuit relationship to state the consequence. Repeating the prompt—“the current decreases because it gets hot”—adds no mechanism.

Keep equations connected to physical meaning

Consider momentum and force:

The equations are not two unrelated formula-booklet entries. They connect net force to the rate of momentum change and impulse to the area under a force–time graph. A question may present words, a graph or collision data; the physics connection lets you move among representations.

The same approach applies to energy. Instead of memorizing \(W=Fs\cos\theta\), \(E_k=\tfrac12mv^2\) and \(P=W/t\) separately, organize them around transfer, storage and rate. In fields, connect force, potential energy, potential and field strength. In waves, connect displacement descriptions, phase, path difference, interference and energy transfer.

Use technology as a checker, not a substitute

A reliable physics calculator can help you check arithmetic, explore how outputs change with inputs and diagnose a rearrangement after you have attempted the problem. It should not replace a model choice or a written solution. In an exam, you still need to select the relationship, use compatible units and interpret the result.

How to strengthen the scientific investigation

The scientific investigation contributes 20%, so it can provide stability before the final examinations. It is not a guaranteed “easy 20%.” The task rewards a coherent investigation in which the research question, method, data processing, conclusion and evaluation support one another. A sophisticated topic with weak control and analysis is usually less effective than a focused question answered with high-quality evidence.

Choose a question you can answer well

A productive research question identifies the system, independent variable, dependent variable and relevant conditions. It should allow enough data for meaningful analysis and enough control for a defensible conclusion. Avoid questions whose result is predetermined by a direct textbook verification unless you can introduce a thoughtful dimension of modelling or method. Also avoid systems so complex that uncontrolled effects dominate the signal.

Before committing, run a feasibility check:

• Can the independent variable cover a useful range with at least five well-spaced levels?
• Can the dependent variable be measured with appropriate resolution?
• Can important controls be kept stable or monitored?
• Is there a physical model against which the pattern can be interpreted?
• Can repeated measurements be completed within available time?
• Are risks and ethical or environmental issues manageable?
• Will the analysis answer the exact wording of the research question?

Pilot before collecting final data

A pilot reveals whether the effect is measurable, whether the range is sensible, which controls matter and whether the apparatus behaves as assumed. It can expose saturation, parallax, thermal drift, friction, timing limits, sensor lag or an unsuitable sampling interval. Record what the pilot changed. That reasoning helps demonstrate that the design developed in response to the physics rather than being copied unchanged from a generic method.

Process data transparently

Include raw data with units and uncertainty, then show representative processing so a reader can reproduce your results. If software performs a regression, state the model, define variables, report parameter units and discuss fit quality. Do not turn the report into a screenshot collection. Tables and graphs need descriptive labels, consistent significant figures and readable scales.

If a model is nonlinear, consider whether a justified transformation creates a testable linear relationship. For a pendulum in the small-angle model,

A graph of \(T^2\) against \(L\) should be linear with gradient \(4\pi^2/g\). The transformation is useful because it connects the data directly to a parameter estimate. It is not useful if the investigation ignores the small-angle assumption or treats a non-zero intercept as meaningless.

Conclude with evidence and scope

A strong conclusion answers the research question quantitatively, interprets the pattern using physics, compares with an accepted or theoretical relationship where appropriate, and acknowledges the uncertainty and valid range. Avoid claiming that a model is “proved.” Experimental data can support a model within the tested range and uncertainty; it cannot establish universal truth from a limited school investigation.

Evaluate the largest limitations first

Prioritize limitations by likely effect, not by ease of listing. Discuss the issue’s source, impact and improvement. If friction is central, explain how it biases the relationship or increases scatter. If the independent variable is not actually isolated, state the confounding pathway. If uncertainty is dominated by one measurement, improve that measurement rather than suggesting more repeats everywhere.

Remember that moderation can change a school-awarded mark. When using the grade calculator, test a small IA range—perhaps your current estimate, one mark lower and two marks lower—to see whether the predicted subject grade is robust. If it changes immediately, you need a stronger examination buffer.

Data analysis, uncertainty and graphs

Data skills affect Paper 1B, Paper 2 and the scientific investigation. Treat them as a core strand of Physics revision. The aim is not to memorize a bag of rules but to understand what the reported precision means and how measurement quality affects a conclusion.

Absolute, fractional and percentage uncertainty

If a quantity \(x\) is reported as \(x\pm\Delta x\), then \(\Delta x\) is the absolute uncertainty. The fractional and percentage uncertainties are:

The uncertainty should normally be quoted to a sensible number of significant figures, and the measured value should be rounded to the same decimal place as its absolute uncertainty. Writing \(2.347891\pm0.1\ \text{m}\) communicates false precision; \(2.3\pm0.1\ \text{m}\) is consistent with the stated resolution.

Propagation in common calculations

For sums and differences, absolute uncertainties are combined using the convention required by your course and context. For products, quotients and powers, fractional or percentage uncertainties provide the natural comparison. A frequently used worst-case planning rule is:

The relationship shows why a squared or cubed measurement can dominate a final uncertainty. If \(V=\pi r^2h\), then the fractional uncertainty in \(r\) is doubled. Improving the radius measurement may therefore be much more valuable than collecting a more precise height.

Gradients and intercepts

Always derive gradient units from the plotted axes. If force is plotted vertically against acceleration horizontally, the gradient unit is \(\text{N}/(\text{m s}^{-2})=\text{kg}\), consistent with mass. An intercept can represent an offset, background effect, threshold or model failure. Do not automatically force a best-fit line through the origin just because theory has no intercept; investigate whether the data support that constraint.

Error bars and model agreement

Error bars show a range associated with measurement uncertainty. They do not guarantee that the true value lies inside every bar, nor do they replace analysis of systematic effects. When comparing a data point with a model, consider uncertainty overlap, overall trend and residual pattern. Random residuals around zero support the functional form more convincingly than a high correlation accompanied by a curved residual structure.

Orders of magnitude and estimation

Physics answers should make physical sense. Estimate before committing to an exact calculation. A human-scale acceleration of \(10^{14}\ \text{m s}^{-2}\), a household current of \(10^8\ \text{A}\), or a negative absolute temperature in an ordinary ideal-gas calculation should trigger a review. Common sources are unconverted prefixes, incorrect powers of ten, degrees entered when radians are needed, and a missing square.

Build a prefix reflex: \(\text{m}=10^{-3}\), \(\mu=10^{-6}\), \(\text{n}=10^{-9}\), \(\text{k}=10^3\), \(\text{M}=10^6\), \(\text{G}=10^9\). Write conversions explicitly during practice. The few seconds spent recording \(250\ \text{mA}=0.250\ \text{A}\) can protect several method marks.

How to revise the five IB Physics themes

The current syllabus is organized through five themes: space, time and motion; the particulate nature of matter; wave behaviour; fields; and nuclear and quantum physics. The structure encourages connections. A successful revision plan does not seal each theme into a separate box. Energy, momentum, field models, oscillation, data analysis and mathematical tools recur across the course.

A. Space, time and motion

This theme develops kinematics, forces, momentum, energy, rotational motion, relativity and related HL extensions. Begin with representation: motion graphs, vector diagrams, free-body diagrams and system definitions. Many errors originate before the algebra begins because a student includes the wrong force, chooses inconsistent signs or applies a constant-acceleration relationship when acceleration varies.

Connect graphs and equations. The gradient of a displacement–time graph gives velocity; the gradient of a velocity–time graph gives acceleration; the area under a velocity–time graph gives displacement; and the area under a force–time graph gives impulse. Practise moving among a verbal description, graph and algebraic model.

For circular motion, make the inward resultant explicit:

“Centripetal force” is not an additional force to draw beside tension, gravity or friction. It is the name for the net inward force supplied by real interactions. Ask which real forces have radial components in the situation.

B. The particulate nature of matter

This theme connects thermal energy, particle models, gases, circuits and other material behaviour. Keep microscopic and macroscopic descriptions linked. Temperature relates to the statistical motion of particles; internal energy depends on microscopic kinetic and potential contributions; pressure can be explained through momentum transfer at boundaries.

For an ideal gas, recognize the conditions and variables in:

Use kelvin for thermodynamic temperature, distinguish amount in moles from particle number, and examine which variables are held constant. In circuits, separate current, potential difference, resistance, power and energy. A component’s current–voltage behaviour is evidence about the component, not a universal straight line.

When energy is transferred electrically, connect the relationships:

Choose a form that matches known variables and valid circuit conditions. Do not use \(P=V^2/R\) across a component if the stated \(V\) is actually the supply voltage and other components share that voltage.

C. Wave behaviour

Wave problems reward careful diagrams and phase reasoning. Start with the wave model \(v=f\lambda\), then connect it to superposition, interference, diffraction, standing waves, resonance and the Doppler effect. Memorizing isolated conditions such as “constructive interference equals whole wavelengths” is less robust than reasoning from phase difference and path difference.

For standing waves, distinguish nodes, antinodes, wavelength and allowed boundary conditions. For simple harmonic motion, connect displacement, acceleration, velocity and energy through the cycle. A central relation is:

The negative sign expresses direction: acceleration points toward equilibrium. Learn to read phase from graphs and to explain why energy shifts between kinetic and potential forms while the ideal total remains constant.

D. Fields

Fields unify gravitational, electric and magnetic interactions. Keep vector field strength distinct from scalar potential. In inverse-square fields, direction, sign and reference point matter. Draw field lines as a visualization, but use superposition quantitatively when multiple sources are present.

For charged-particle motion, identify whether electric work changes speed and whether magnetic force changes direction. Since \(\vec F_B=q\vec v\times\vec B\) is perpendicular to velocity for a purely magnetic force, it does no work on the particle. It can bend the path without changing kinetic energy.

Induction requires more than quoting Faraday’s law. State what changes the magnetic flux linkage and use Lenz’s law to determine the direction of the induced effect. A clear explanation connects change, induced emf/current, opposing effect and energy conservation.

E. Nuclear and quantum physics

This theme asks you to move beyond classical intuition while retaining careful conservation reasoning. Distinguish activity, decay constant, half-life, number of undecayed nuclei and absorbed or emitted energy. Radioactive decay is random for an individual nucleus but statistically predictable for a large population:

For mass–energy questions, track units and the system boundary. For photons, connect energy and momentum:

In atomic and quantum contexts, distinguish a model’s predictive claims from a literal classical picture. Use evidence from spectra, diffraction, the photoelectric effect or other phenomena to explain why a model is supported and where classical expectations fail.

HL depth without losing the core

HL students need additional content and greater mathematical and conceptual depth, but the common foundations remain essential. Advanced questions often become manageable when the system is represented correctly and a conservation law, field relationship or differential idea is recognized. Do not let HL-only material displace routine accuracy on units, graphs and short explanations.

A useful weekly pattern is one common-content mixed set, one HL-extension set and one data-analysis set. This preserves breadth while creating time for deeper work. If you need structured support beyond independent study, an IB Physics online tutor can be useful when feedback is specific to your working, misconceptions and error log rather than limited to repeating notes.

Mathematical skills that protect Physics marks

IB Physics is not a pure mathematics course, but mathematical fluency reduces cognitive load. You should be comfortable with scientific notation, unit conversion, algebraic rearrangement, proportionality, trigonometry, vectors, logarithms, exponentials, gradients, areas, uncertainty and calculator settings. HL students also need confidence with mathematical forms used in the additional content.

Rearrange before substituting

Symbolic rearrangement makes structure visible and reduces repeated calculator entry. If \(E=\tfrac12mv^2\), solving for speed gives \(v=\sqrt{2E/m}\). Substituting first creates a longer numerical route and makes it easier to lose the square root. After rearranging, check that the target variable is isolated and that dimensions are consistent.

Use logarithms with a purpose

For exponential decay, taking natural logs gives:

A graph of \(\ln N\) against \(t\) has gradient \(-\lambda\). This is not an algebra trick detached from physics; it provides a method for extracting a decay constant and testing whether exponential behaviour fits the data.

Keep calculator modes visible

Degrees and radians are a recurring source of avoidable errors. Write the required mode at the top of practice work when trigonometry or angular quantities appear. Learn your permitted calculator’s scientific-notation entry, solver, regression and statistical functions, but practise enough manual reasoning to recognize nonsense output.

A practical 12-week IB Physics revision plan

This plan assumes the course has been taught and revision now needs to consolidate knowledge, expose gaps and build timed performance. Adjust the volume to your school calendar and other subjects. The essential rhythm is diagnose, repair, retrieve, apply, test and review.

Weeks 1–2: establish a baseline

Complete one representative Paper 1A set, one Paper 1B set and a substantial Paper 2 block under honest conditions. Mark strictly. Enter the marks in the calculator and create the error log. Audit your scientific investigation separately: identify any unfinished analysis, unsupported claim, inconsistent uncertainty or vague evaluation.

Build a syllabus map using the five themes. Rate each subtopic as secure, developing or weak based on question evidence, not confidence alone. A topic is secure only if you can retrieve key ideas and apply them in unfamiliar contexts.

Weeks 3–4: mechanics, motion and energy

Repair vector resolution, graphs, kinematics, forces, momentum, work, energy, power and circular motion before moving into the most demanding extensions. Mix conceptual multiple choice with written calculations. End each session with two explanation prompts so mathematical practice does not crowd out communication.

At the end of week 4, repeat selected baseline errors without notes. Do not simply reread solutions. If the same mistake returns, change the repair method: use a diagram checklist, a unit protocol or a smaller prerequisite set.

Weeks 5–6: matter, thermal physics and circuits

Connect particle models to macroscopic relationships. Practise ideal-gas questions, energy transfers, heating and circuit behaviour. Include experimental contexts because these themes often generate strong data-analysis questions. Review how sensor resolution, heat loss and non-ohmic behaviour affect conclusions.

Complete one timed Paper 1B and compare its errors with your first baseline. Look for transferable improvements: clearer gradient work, better uncertainty statements or more precise evaluations.

Weeks 7–8: waves and fields

Use diagrams heavily. Revise oscillation, wave models, superposition, standing waves, diffraction, fields, potential, charged motion and induction at the level required for your course. Alternate qualitative explanation with quantitative calculation. Make sure inverse-square reasoning and sign conventions are automatic.

Complete a mixed Paper 1A set rather than a waves-only set. Mixed practice forces you to recognize the model from the question rather than from the chapter heading.

Weeks 9–10: nuclear, quantum and integration

Review decay, energy levels, photons, mass–energy and the required HL extensions. Then shift from theme blocks to mixed full-paper work. Use current-syllabus specimens and 2025-format questions first. Older questions can supplement content practice, but adapt expectations to the current paper structure.

Calculate a new predicted grade after each complete mock. Record both score and conditions. If a paper was paused, discussed or completed with notes, label it “learning attempt,” not “timed evidence.”

Week 11: simulation and correction

Run at least one full sequence under realistic timing. Practise the Paper 1A/1B transition, calculator setup, data-booklet navigation and stamina. Mark the work on the same day if possible, while decision points are still memorable. Classify every loss and select the three most valuable repairs.

Week 12: consolidate, do not panic-expand

Use short retrieval, targeted error redoes and a limited number of timed sections. Avoid launching a complete rewrite of notes or chasing speculative topic predictions. Protect sleep and routine. The final week should make access to knowledge more reliable, not bury it under a new organizational project.

Exam-day execution

Before the paper starts

Know the rules for your examination session from your coordinator. Bring permitted equipment, check calculator battery and settings, and be familiar with the clean Physics data booklet. Do not rely on a last-minute formula hunt. Your goal is to begin with a calm routine and minimize preventable friction.

During Paper 1

Manage Paper 1A and Paper 1B as parts of one timed sitting. Secure accessible multiple-choice marks, flag slow questions and preserve enough time for data work. Because Paper 1B requires written reasoning, avoid allowing one stubborn multiple-choice item to consume the time needed for a multi-mark data question.

Answer every Paper 1A question. Use elimination when uncertain, but make the elimination physical: units, direction, limiting cases, proportionality or known model behaviour. In Paper 1B, annotate tables and graphs, show gradient points and units, and write evaluations that name a mechanism.

During Paper 2

Scan the paper and respect mark allocation. A one-mark item rarely needs a paragraph; a six-mark calculation needs enough structure to communicate the route. If blocked, write the relevant principle, define symbols, make a diagram or complete a part you can access. Return later rather than leaving the remainder unseen.

Carry values with suitable precision through the working and round at the end. Include units. If a later part depends on an earlier numerical result, continue with your value unless the question provides a replacement. Consistent follow-through may preserve method marks.

Use a final-check hierarchy

1. Confirm no required question or page is blank.
2. Check answer-box transfers and multiple-choice selections.
3. Check units, powers of ten and calculator mode.
4. Check signs and vector directions.
5. Check that explanations contain a mechanism, not a restatement.
6. Check sensible significant figures and graph labels.

Common calculator and revision mistakes

Using old-syllabus boundaries

Physics boundaries from 2024 and earlier relate to a different assessment structure. They should not be placed beside current Paper 1A, Paper 1B and Paper 2 marks as though only the year changed. Use current-syllabus sessions for whole-grade prediction.

Entering percentages as raw marks

If an HL student earns 70% on Paper 2, the raw mark is \(0.70\times90=63\), not 70. Entering 70 treats the result as 70/90, or 77.8%, and inflates the prediction. Check every denominator before typing.

Combining Paper 1A and Paper 1B carelessly

At HL, a combined Paper 1 mark is out of 60, not 45. More importantly, this calculator accepts the two subcomponents separately. Keep the reported marks separate so the different maxima and planning contributions are preserved.

Treating a boundary as a target

A historical minimum is a reference, not a recommended goal. Targeting exactly 70 because one session began grade 7 at 70 leaves no margin for a harder boundary, an overestimated mock, an investigation adjustment or normal exam variation.

Confusing a predicted subject grade with diploma status

A Physics grade is one input to the Diploma Programme result. Diploma award conditions, higher-level totals and core requirements are separate. Use the broader IB resources hub and your coordinator’s official guidance when planning the whole diploma.

Frequently asked questions