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NEET UG · subject
Physics is 45 of the 180 questions in NEET UG and 180 of the 720 marks, and it is where most ranks are lost — not because the chapters are exotic, but because four or five repeated slips cost marks in otherwise correct work. This page ranks every unit by weightage, names the mistake each one usually catches, and shows what to practise next. BrainStride is an AI tutor for JEE, NEET and Olympiad preparation that runs a 20-minute diagnostic, maps your weak chapters and writes a daily plan, with every solution checked by teachers.
Quick answer
Question counts are BrainStride’s analysis of recent NEET papers, not official figures — NTA publishes no chapter weightage. Average questions per paper, most recent sessions.
All 20 units of the NEET Physics syllabus, in official order. Unit names match the syllabus tracker and the NEET syllabus page, so nothing is counted twice.
| Unit | Class | Typical questions | What it tests | The mistake it catches |
|---|---|---|---|---|
| 1. Physics and Measurement | 11 | 1–2 Q | Dimensions, errors | Rounding significant figures at every step instead of only at the end. |
| 2. Kinematics | 11 | 2–3 Q | Graphs, algebra | Choosing a positive direction and then abandoning it halfway through. |
| 3. Laws of Motion | 11 | 2–3 Q | Free-body diagrams | Writing friction as μmg on an incline instead of μmg cos θ. |
| 4. Work, Energy and Power | 11 | 2–3 Q | Application | Using energy conservation while a non-conservative force is still doing work. |
| 5. Rotational Motion | 11 | 2–4 Q | Hard, formula-heavy | Recalling I for the wrong axis instead of applying the parallel-axis theorem. |
| 6. Gravitation | 11 | 1–2 Q | Formula recall | Mixing orbital speed and escape speed, which differ by a factor of √2. |
| 7. Properties of Solids and Liquids | 11 | 2–4 Q | Mixed recall and numericals | Reading a stress–strain graph for the wrong modulus, or dropping the area term. |
| 8. Thermodynamics | 11 | 2–3 Q | Sign conventions | Using the chemistry sign convention for work instead of the physics one. |
| 9. Kinetic Theory of Gases | 11 | 1–2 Q | Recall + single step | Putting temperature in Celsius into rms speed and mean energy formulas. |
| 10. Oscillations and Waves | 11 | 2–4 Q | Application | Ignoring the phase difference when two SHMs or two waves are combined. |
| 11. Electrostatics | 12 | 3–5 Q | Application | Adding potentials as vectors, or adding fields as scalars. |
| 12. Current Electricity | 12 | 3–5 Q | Circuit reduction | Reducing a network by habit without checking which points sit at the same potential. |
| 13. Magnetic Effects of Current and Magnetism | 12 | 3–4 Q | Application | Applying the right-hand rule and then dropping the sign of the charge. |
| 14. Electromagnetic Induction and Alternating Currents | 12 | 2–4 Q | Application | Losing the direction Lenz’s law gives, or using peak values where rms belongs. |
| 15. Electromagnetic Waves | 12 | 1–2 Q | Recall | Ordering the spectrum by wavelength when the question asks by frequency. |
| 16. Optics | 12 | 3–5 Q | Sign conventions | Dropping the Cartesian sign convention midway through a mirror or lens problem. |
| 17. Dual Nature of Matter and Radiation | 12 | 2–3 Q | Recall + single step | Mixing electronvolts and joules in the photoelectric equation. |
| 18. Atoms and Nuclei | 12 | 2–3 Q | Recall + calculation | Confusing binding energy per nucleon with total binding energy. |
| 19. Electronic Devices | 12 | 2–3 Q | Recall | Reading a circuit as common-emitter when the question draws common-base. |
| 20. Experimental Skills | 11–12 | 1–2 Q | Recall | Getting the least count right and then forgetting the zero error. |
Ranges overlap and are rounded, so chapter ranges do not add up exactly to a unit or subject total. Counts shift by a question or two every year.
Start with the chapters that are both heavy and fixable. Electrostatics, Current Electricity and Optics carry 9–15 questions between them in recent papers, and their errors are usually procedural — a sign convention dropped, a circuit reduced by habit — rather than conceptual. Modern physics adds 4–6 Q for a syllabus you can finish in a fortnight.
Leave Rotational Motion and the harder parts of Properties of Solids and Liquids for after that. They are worth 2–4 Q and 2–4 Q, but they take the longest to become reliable.
The same chapters appear in both, but NEET rewards speed on single-step numericals rather than multi-concept problems. You have roughly a minute a question across the paper, so the skill being tested is recognising the standard form quickly and finishing it without arithmetic slips.
That makes timed sets of 15–20 questions more useful than long problem sessions. Mark every question you got right but slowly — those are the ones that cost marks later.
Every wrong answer is tagged as a concept gap, a silly error or time pressure, and that tag picks what you practise next. A chapter you keep missing returns tomorrow, and the day after, until the error rate falls. You can see the same picture yourself in the NEET exam pattern and qualifying marks pages.
Physics is 180 of the 720 marks, and it is the section where a Biology-strong student's rank is usually decided. The NEET marks vs rank post shows how much a 20-mark Physics swing moves a rank on the 2025 and 2026 papers, and the NEET rank predictor gives the band for any total. NEET Chemistry is the other 180 marks and shares the same NCERT-first method. The full NEET syllabus lists every Physics unit with its chapters, and the NEET hub keeps the pattern, syllabus and dates together. When a mock goes badly in Physics, how to analyse a mock test walks through tagging every lost mark as a concept gap, a silly error or time pressure, which is the distinction that decides what to do next.
The 20 chapters grouped the way students study them. Ranges are the sum of the chapter ranges; shares use the midpoints, so they add to 100% while the ranges overlap.
| Branch | Chapters | Questions per paper | Share of the section | Marks at stake |
|---|---|---|---|---|
| Mechanics | 7 | 12–21 | 31% | 48–84 |
| Heat and thermodynamics | 2 | 3–5 | 8% | 12–20 |
| Oscillations and waves | 1 | 2–4 | 6% | 8–16 |
| Electricity and magnetism | 4 | 11–18 | 28% | 44–72 |
| Optics and electromagnetic waves | 2 | 4–7 | 10% | 16–28 |
| Modern physics and electronics | 3 | 6–9 | 14% | 24–36 |
| Experimental skills | 1 | 1–2 | 3% | 4–8 |
Question counts are BrainStride’s analysis of recent NEET papers, not official figures — NTA publishes no chapter weightage.
Mechanics — 7 chapters (Physics and Measurement, Kinematics, Laws of Motion, Work, Energy and Power, Rotational Motion, Gravitation, Properties of Solids and Liquids) — brings about 12–21 of the 45 Physics questions in our reading of recent papers, roughly 31% of the section, or 48–84 marks. The heaviest chapters inside it are Rotational Motion (2–4) and Properties of Solids and Liquids (2–4).
Heat and thermodynamics — 2 chapters (Thermodynamics, Kinetic Theory of Gases) — brings about 3–5 of the 45 Physics questions in our reading of recent papers, roughly 8% of the section, or 12–20 marks. The heaviest chapters inside it are Thermodynamics (2–3) and Kinetic Theory of Gases (1–2).
Oscillations and waves — 1 chapters (Oscillations and Waves) — brings about 2–4 of the 45 Physics questions in our reading of recent papers, roughly 6% of the section, or 8–16 marks.
Electricity and magnetism — 4 chapters (Electrostatics, Current Electricity, Magnetic Effects of Current and Magnetism, Electromagnetic Induction and Alternating Currents) — brings about 11–18 of the 45 Physics questions in our reading of recent papers, roughly 28% of the section, or 44–72 marks. The heaviest chapters inside it are Electrostatics (3–5) and Current Electricity (3–5).
Optics and electromagnetic waves — 2 chapters (Electromagnetic Waves, Optics) — brings about 4–7 of the 45 Physics questions in our reading of recent papers, roughly 10% of the section, or 16–28 marks. The heaviest chapters inside it are Optics (3–5) and Electromagnetic Waves (1–2).
Modern physics and electronics — 3 chapters (Dual Nature of Matter and Radiation, Atoms and Nuclei, Electronic Devices) — brings about 6–9 of the 45 Physics questions in our reading of recent papers, roughly 14% of the section, or 24–36 marks. The heaviest chapters inside it are Dual Nature of Matter and Radiation (2–3) and Atoms and Nuclei (2–3).
Experimental skills — 1 chapters (Experimental Skills) — brings about 1–2 of the 45 Physics questions in our reading of recent papers, roughly 3% of the section, or 4–8 marks.
Patterns our subject mentors see most often — illustrative, not measured. Sample observations; replace with measured data before launch.
Why it happens
On an incline, μmg is the flat-ground answer your hand writes before your head catches up.The fix
Draw the normal force first, every time. If the surface is tilted, the normal is mg cos θ and friction follows it.Why it happens
Kinematics, optics and thermodynamics each have their own convention, and switching chapters switches habits.The fix
Write the convention at the top of the rough work before the first line of algebra, then never re-derive it mid-problem.Why it happens
cm, g and kV walk into a formula unnoticed when you are working quickly.The fix
Convert everything to SI in the first line, before substituting. It costs five seconds and saves four marks.Why it happens
The standard results are for specific axes, and the question rarely uses that axis.The fix
Ask which axis the question uses before recalling I, then apply the parallel-axis theorem deliberately.Why it happens
With 180 questions in 180 minutes, the final section is answered under the most pressure.The fix
Leave the questions you are unsure about for a marked second pass, and stop guessing once the marking scheme is against you: −1 for a wrong answer, 0 for a blank.Everything here is free and open — no sign-up needed for the tools.
Every solution is reviewed by a subject teacher before it ships, explanations are audited weekly, and a one-tap report sends any question straight to a mentor.
Read the editorial policyNEET UG Physics has 45 compulsory questions worth 180 of the paper’s 720 marks, under the pattern NTA has used since 2025. Each correct answer earns +4 and each wrong answer costs −1, with no negative marking for a blank. Chapter-wise counts shift slightly every year, so treat any weightage figure — including ours — as a range.
In recent NEET papers, Electrostatics (3–5 Q), Current Electricity (3–5 Q), Optics (3–5 Q) and modern physics (4–6 Q) carry the most questions, with mechanics spread across several units. These are BrainStride estimates from past papers, not official weightage, because NTA does not publish chapter-wise weightage for NEET UG.
Physics is fewer questions than Biology but costs more ranks, because it is calculated rather than recalled and negative marking punishes rushed arithmetic. Biology is 90 of the 180 questions, so it decides the rank; Physics decides whether you keep the marks Biology earned you. Most students need daily Physics practice and weekly Biology revision, not the reverse.
NCERT is enough for the syllabus and the formulas, but not for the practice. NEET Physics questions are single-step numericals written under time pressure, and the NCERT exercises are too few to build that speed. Use NCERT to fix concepts and definitions, then practise timed sets of past-paper-style questions chapter by chapter.
Roughly half. Ten of the 20 NEET Physics units are Class 11 — mechanics, thermal physics, oscillations and waves — and they appear every year. Droppers who focus only on Class 12 lose marks twice: once in the Class 11 questions, and again in Class 12 chapters such as Current Electricity that assume Class 11 mechanics.
Name the mistake rather than resolving to be careful. BrainStride tags every wrong answer as a concept gap, a silly error or time pressure, and uses that tag to choose your next practice set — accuracy drills for slips, explanations for gaps. Reviewing your own error log weekly does the same job without the app.
Pattern and marking facts on this page follow the NEET UG pattern used since 2025. Confirm the 2027 details in the official bulletin when it is released.
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