In short: CBSE Class 12 Physics 2027 carries 70 marks in theory and 30 marks in practicals, totaling 100. The syllabus spans 10 units and 14 chapters. Electrostatics and Current Electricity together carry 16 marks, Magnetic Effects and EMI contribute 17 marks, Optics is worth 14 marks, Dual Nature plus Atoms and Nuclei give 12 marks, Electronic Devices accounts for 7 marks, and EM Waves carries 4 marks. Numericals alone make up 40-50% of the paper. Prioritise Current Electricity, Ray Optics, Wave Optics, EMI, and Electrostatics for maximum returns. Cover these 6 chapters to secure 50+ out of 70.
How the CBSE Class 12 Physics Paper Is Structured
The CBSE Class 12 Physics examination consists of a 70-mark theory paper and a 30-mark practical exam. The theory paper follows a fixed section-wise format with different question types spread across five sections.
| Component | Marks |
|---|---|
| Theory Paper | 70 |
| Practical Exam | 30 |
| Total | 100 |
Theory Paper Section Breakdown:
| Section | Question Type | Number of Questions | Marks per Question | Total Marks |
|---|---|---|---|---|
| A | MCQs + Assertion-Reason | 16 | 1 | 16 |
| B | Very Short Answer | 5 | 2 | 10 |
| C | Short Answer | 7 | 3 | 21 |
| D | Long Answer (Numericals/Derivations) | 3 | 5 | 15 |
| E | Case-Based | 2 | 4 | 8 |
| Total | 70 |
Internal choice is provided in Section B (2 questions), Section C (2 questions), Section D (1 question), and Section E (sub-parts). The case-based questions in Section E typically include a passage followed by four sub-questions worth 1 mark each, with one optional sub-question.
Unit-Wise Marks Distribution Table
This is the official CBSE curriculum-based weightage for the 2027 examination year. It is drawn from the CBSE Academic Session 2026-27 syllabus document and reflects how marks are distributed across the 10 units of Class 12 Physics.
| Unit No. | Unit Name | Chapters Covered | Marks | Expected Questions | Priority |
|---|---|---|---|---|---|
| I + II | Electrostatics and Current Electricity | Ch 1: Electric Charges and Fields, Ch 2: Electrostatic Potential and Capacitance, Ch 3: Current Electricity | 16 | 6-8 | High |
| III + IV | Magnetic Effects of Current and EMI | Ch 4: Moving Charges and Magnetism, Ch 5: Magnetism and Matter, Ch 6: Electromagnetic Induction, Ch 7: Alternating Current | 17 | 6-8 | High |
| V | Electromagnetic Waves | Ch 8: Electromagnetic Waves | 4 | 2-3 | Low |
| VI | Optics | Ch 9: Ray Optics, Ch 10: Wave Optics | 14 | 5-7 | High |
| VII + VIII | Dual Nature of Radiation, Atoms and Nuclei | Ch 11: Dual Nature of Radiation and Matter, Ch 12: Atoms, Ch 13: Nuclei | 12 | 5-6 | Medium |
| IX | Electronic Devices | Ch 14: Semiconductor Electronics | 7 | 3-4 | Medium |
| Total | 70 | 33 |
Note on Communication Systems: Chapter 15 (Communication Systems) was removed from the CBSE Class 12 Physics syllabus from the 2022-23 session onwards. It will NOT appear in the 2027 exam. Skip it entirely if your reference book includes it.
Detailed Chapter-Wise Breakdown Within Each Unit
This table gives you a chapter-level view with estimated marks, key topics, question types, and difficulty ratings to help you plan your study time.
| Ch. No. | Chapter Name | Unit Group | Approx. Marks | Key Topics | Primary Question Type | Difficulty |
|---|---|---|---|---|---|---|
| 1 | Electric Charges and Fields | Electrostatics (16m) | 7-8 | Coulomb's Law, Electric Field Lines, Gauss's Theorem derivations | Derivation + Numerical | Hard |
| 2 | Electrostatic Potential and Capacitance | Electrostatics (16m) | 7-8 | Potential due to dipole, Capacitor combinations, Energy stored | Numerical + Theory | Medium |
| 3 | Current Electricity | Electrostatics + Current (16m) | 7-8 | Kirchhoff's Laws, Wheatstone Bridge, Metre Bridge, Potentiometer | Numerical | Medium |
| 4 | Moving Charges and Magnetism | Magnetic + EMI (17m) | 5-6 | Biot-Savart Law, Ampere's Law, Force on conductor, Cyclotron | Derivation + Numerical | Hard |
| 5 | Magnetism and Matter | Magnetic + EMI (17m) | 2-3 | Magnetic Properties, Earth's Magnetism, Dia/Para/Ferromagnets | Theory (MCQ heavy) | Medium |
| 6 | Electromagnetic Induction | Magnetic + EMI (17m) | 4-5 | Faraday's Laws, Lenz's Law, Motional EMF, Self/Mutual Inductance | Derivation + Numerical | Hard |
| 7 | Alternating Current | Magnetic + EMI (17m) | 4-5 | LCR Series Circuit, Resonance, Transformers, Power Factor | Numerical + Theory | Medium |
| 8 | Electromagnetic Waves | EM Waves (4m) | 4 | EM Spectrum, Displacement Current, Properties of EM Waves | Theory (MCQ) | Easy |
| 9 | Ray Optics | Optics (14m) | 7-8 | Lens/Mirror Formula, TIR, Prism, Microscope, Telescope | Derivation + Numerical + Diagram | Medium |
| 10 | Wave Optics | Optics (14m) | 6-7 | YDSE, Diffraction, Polarisation, Huygens' Principle | Derivation + Numerical | Hard |
| 11 | Dual Nature of Radiation and Matter | Dual Nature + Atoms (12m) | 4-5 | Photoelectric Effect, Einstein's Equation, de Broglie wavelength | Numerical + Graph | Medium |
| 12 | Atoms | Dual Nature + Atoms (12m) | 3-4 | Bohr Model, Energy Levels, Spectral Series | Derivation + Theory | Medium |
| 13 | Nuclei | Dual Nature + Atoms (12m) | 3-4 | Mass Defect, Binding Energy, Radioactive Decay, Fission/Fusion | Numerical + Theory | Easy |
| 14 | Semiconductor Electronics | Electronic Devices (7m) | 7 | p-n Junction, Diode, Zener Diode, Logic Gates, Transistor as switch | Theory + Diagram + Numerical | Medium |
Priority Classification: High, Medium, and Low Chapters
Not all chapters yield the same return on your study time. Here is a priority classification based on marks, predictability, and difficulty.
High-Priority Chapters (Target First)
| Chapter | Marks | Why It Is High Priority |
|---|---|---|
| Current Electricity (Ch 3) | 7-8 | Most predictable numericals in the paper. Kirchhoff's, Wheatstone, Potentiometer follow fixed patterns. Practice 40 problems and score near-perfect. |
| Ray Optics (Ch 9) | 7-8 | Diagram-heavy — labelled ray diagrams fetch marks even for partial answers. Lens/mirror numericals are formulaic. |
| Wave Optics (Ch 10) | 6-7 | YDSE derivation appears almost every year. Fringe width numerical is a guaranteed 3-5 marks. |
| Electromagnetic Induction (Ch 6) | 4-5 | Faraday's Law derivation and motional EMF are tested annually. Worth the effort despite difficulty. |
| Electrostatics (Ch 1-2) | 14-16 | Highest marks from a single unit. Gauss's Law application and capacitor numericals are highly predictable. |
| Alternating Current (Ch 7) | 4-5 | LCR resonance and transformer numericals are pattern-based and scoring. |
Strategy: Cover these 6 chapters to secure 50+ out of 70.
Medium-Priority Chapters
| Chapter | Marks | Why It Is Medium Priority |
|---|---|---|
| Magnetism and Matter (Ch 5) | 2-3 | Requires precise definitions but marks are limited. Good for MCQ section. |
| Semiconductor Electronics (Ch 14) | 7 | Theory-based with circuit diagrams. Learn logic gates truth tables and V-I characteristics. |
| Dual Nature (Ch 11) | 4-5 | Photoelectric equation is simple and scoring. Graph-based questions are common. |
| Moving Charges and Magnetism (Ch 4) | 5-6 | Derivations are complex but marks are significant. Focus on Biot-Savart and Ampere's Law. |
Low-Priority Chapters (Cover Last)
| Chapter | Marks | Why It Is Low Priority |
|---|---|---|
| EM Waves (Ch 8) | 4 | Purely theoretical. Memorise the EM spectrum and displacement current. One day is enough. |
| Nuclei (Ch 13) | 3-4 | Simple formulas for mass defect and binding energy. Limited numerical variety. |
| Atoms (Ch 12) | 3-4 | Bohr model derivation is the only major topic. Theory-heavy. |
Chapter-Wise Important Topics List
Each chapter has specific topics that appear repeatedly. Prioritise these within each chapter.
| Chapter | Must-Know Topics |
|---|---|
| Electric Charges and Fields | Coulomb's Law numerical, Electric field due to dipole (axial + equatorial), Gauss's Theorem applications (sphere, plane, cylinder) |
| Electrostatic Potential and Capacitance | Potential due to point charge and dipole, Equipotential surfaces, Capacitor series/parallel combinations, Energy stored in capacitor, Effect of dielectric |
| Current Electricity | Ohm's Law, Drift velocity, Kirchhoff's Laws, Wheatstone Bridge, Metre Bridge, Potentiometer (compare EMF, find internal resistance) |
| Moving Charges and Magnetism | Biot-Savart Law (field at centre of loop, on axis), Ampere's Circuital Law (solenoid, toroid), Force on current-carrying conductor, Cyclotron |
| Magnetism and Matter | Bar magnet as dipole, Magnetic field lines, Earth's magnetism, Dia/Para/Ferromagnetic materials |
| Electromagnetic Induction | Faraday's Laws, Lenz's Law, Motional EMF, Self-inductance, Mutual inductance, AC generator |
| Alternating Current | AC voltage to resistor/inductor/capacitor, LCR series circuit, Resonance, Power factor, Transformer |
| Electromagnetic Waves | Displacement current, EM spectrum (all 7 types), Properties of EM waves |
| Ray Optics | Reflection/Refraction, TIR and applications, Prism, Lens/Mirror formula, Compound microscope, Astronomical telescope |
| Wave Optics | Huygens' Principle, YDSE (fringe width derivation), Diffraction (single slit), Polarisation (Brewster's angle, Malus' Law) |
| Dual Nature | Photoelectric effect (Einstein's equation), Graphs (3 types), de Broglie wavelength |
| Atoms | Bohr model postulates, Energy level derivation, Spectral series |
| Nuclei | Mass defect, Binding energy per nucleon curve, Radioactive decay law, Nuclear fission and fusion |
| Semiconductor Electronics | p-n junction formation, Forward/Reverse bias, Zener diode, Rectifier circuits, Logic gates (truth tables), Transistor as switch/amplifier |
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Previous Year Trend Analysis (2024-2026)
Understanding which topics appear consistently helps you allocate study time more effectively. This table tracks the appearance and marks of key topics over the last three years.
| Topic | 2024 Marks | 2025 Marks | 2026 Marks | Frequency |
|---|---|---|---|---|
| Gauss's Theorem Application | 5 | 3 | 5 | Every year |
| Capacitor Combinations Numerical | 3 | 2 | 3 | Every year |
| Kirchhoff's Laws Numerical | 3 | 3 | 2 | Every year |
| Wheatstone Bridge / Metre Bridge | 2 | 3 | 3 | Every year |
| Potentiometer EMF Comparison | 2 | 2 | 3 | Every year |
| Biot-Savart Law Derivation | 3 | 5 | 3 | Every year |
| YDSE Fringe Width Derivation | 5 | 3 | 5 | Every year |
| Ray Diagram (Microscope/Telescope) | 3 | 3 | 2 | Every year |
| Photoelectric Effect Numerical | 2 | 3 | 2 | Every year |
| Logic Gates Truth Table | 2 | 2 | 2 | Every year |
| EM Spectrum MCQ | 1 | 2 | 1 | Every year |
| Bohr Model Derivation | 3 | — | 3 | Most years |
| LCR Resonance Numerical | 2 | 3 | 2 | Most years |
| Transformer Numerical | — | 2 | 2 | Most years |
| Lens Maker Formula Derivation | 3 | — | 5 | Alternate years |
| Semiconductor Diode V-I Curve | 2 | 3 | 3 | Every year |
| Faraday's Law Application | 3 | 2 | 3 | Every year |
| Motional EMF Numerical | 2 | 3 | — | Most years |
| de Broglie Wavelength Numerical | 2 | 1 | 2 | Every year |
| Radioactive Decay Numerical | 2 | 2 | 1 | Most years |
Key Takeaway: Gauss's Theorem, YDSE, Kirchhoff's Laws, Biot-Savart, Capacitor Combinations, and Photoelectric Effect appear in some form every single year. These six topics alone account for 18-25 marks of the paper.
Scoring Strategy: Numericals Carry 40-50% of Marks
This is the most important strategic insight for Physics: approximately 28-35 marks of the 70-mark paper come from numerical problems. If you can solve numericals confidently, you already have half the paper covered.
How numericals are distributed:
| Section | Numerical Marks (Approx.) | Nature |
|---|---|---|
| Section A (MCQs) | 4-6 marks | Quick calculation MCQs |
| Section B (2-mark) | 4-6 marks | Short numericals |
| Section C (3-mark) | 6-9 marks | Medium numericals |
| Section D (5-mark) | 10-15 marks | Long numericals or derivations |
| Section E (Case-based) | 2-4 marks | Application-based calculation |
| Total | 28-35 marks | 40-50% of paper |
Numerical Practice Plan:
| Chapter | Minimum Numericals to Solve | Focus Areas |
|---|---|---|
| Electrostatics | 50+ | Coulomb's Law, Electric Field, Capacitor Combinations, Energy Stored |
| Current Electricity | 40+ | Kirchhoff's, Wheatstone, Potentiometer, Internal Resistance |
| Magnetic Effects | 30+ | Biot-Savart applications, Force on conductor, Cyclotron |
| EMI and AC | 30+ | Motional EMF, LCR impedance, Resonance, Transformer |
| Optics | 40+ | Mirror/Lens formula, Prism, YDSE fringe width, Magnification |
| Modern Physics | 25+ | Photoelectric equation, de Broglie, Binding Energy, Decay |
| Total | 215+ |
10 Most-Asked Derivations in CBSE Class 12 Physics
These derivations have appeared repeatedly across previous year papers. Practise writing each one completely, with diagrams where needed.
| Rank | Derivation | Chapter | Typical Marks |
|---|---|---|---|
| 1 | Electric field due to an electric dipole (axial and equatorial) | Ch 1 | 3-5 |
| 2 | Gauss's Theorem and its application (infinite charged plane, uniformly charged sphere) | Ch 1 | 5 |
| 3 | Capacitance of a parallel plate capacitor with and without dielectric | Ch 2 | 3-5 |
| 4 | Biot-Savart Law application (magnetic field at centre of circular loop, on axis) | Ch 4 | 3-5 |
| 5 | Ampere's Circuital Law application (solenoid and toroid) | Ch 4 | 3-5 |
| 6 | Faraday's Law of EMI and expression for motional EMF | Ch 6 | 3-5 |
| 7 | Derivation of lens/mirror formula using sign convention | Ch 9 | 3-5 |
| 8 | Lens maker's equation | Ch 9 | 3-5 |
| 9 | Young's Double Slit Experiment — fringe width expression | Ch 10 | 5 |
| 10 | Bohr's postulates and derivation of energy levels for hydrogen atom | Ch 12 | 3-5 |
Pro tip: When writing derivations in the exam, always start with a neat diagram, state your assumptions, show every algebraic step, and box or underline the final result. Examiners award step marks, so even an incomplete derivation with the correct setup and initial steps can fetch 2-3 marks out of 5.
Practical Exam Breakdown (30 Marks)
The 30-mark practical exam is often overlooked, but it is a reliable source of marks. Most students score between 25 and 28 here.
| Component | Marks | Details |
|---|---|---|
| Two Experiments (one from each section) | 8 + 8 = 16 | Section A: Resistance, Potentiometer, Galvanometer, Metre Bridge. Section B: Prism, Glass Slab, Convex Lens, Concave Mirror. |
| Practical Record + Viva | 7 | Record file must be complete and signed. Viva includes theory behind experiments. |
| Project Work | 3 | Investigatory project related to Physics concepts. |
| Activities (two from each section) | 4 | Simple activities demonstrating Physics principles. |
| Total | 30 |
Experiment-Wise Tips:
| Experiment | Scoring Tip |
|---|---|
| Metre Bridge (finding resistance) | Draw the circuit diagram neatly. Record at least 5 readings. Calculate percentage error. |
| Potentiometer (comparing EMFs) | Ensure null point readings are accurate. Show the calculation clearly. |
| Ohm's Law verification | Plot V-I graph on graph paper. Label axes with units. Calculate slope for resistance. |
| Prism (finding refractive index) | Measure angle of minimum deviation carefully. Show the Snell's Law calculation. |
| Convex Lens (finding focal length) | Use u-v method. Plot 1/v vs 1/u graph. At least 6 observations. |
| Concave Mirror (finding focal length) | Use the parallax method. Show sign convention clearly. |
Viva Questions to Prepare:
- What is the principle behind the metre bridge?
- Why do we use a galvanometer instead of a voltmeter in a potentiometer experiment?
- Explain total internal reflection with an example
- What happens when a dielectric is inserted in a charged capacitor?
- Draw and explain the V-I characteristics of a p-n junction diode
Unit-Wise Tips for Maximum Scoring
Electrostatics and Current Electricity (16 marks)
Start every numerical by drawing a diagram. For capacitor problems, identify whether the combination is series or parallel before calculating. In Current Electricity, label the direction of current in every loop before applying Kirchhoff's Voltage Law. For Potentiometer questions, remember that the potential gradient is the key quantity — all calculations flow from it. The combination of these two areas gives you the single largest scoring block in the paper.
Magnetic Effects and EMI (17 marks)
Biot-Savart Law derivations require careful vector notation. Always specify the direction using the right-hand rule and show the cross product step explicitly. For EMI, remember that the sign of induced EMF follows from Lenz's Law — the induced current opposes the change that causes it. LCR circuit problems require you to calculate impedance first, then current, then voltage across each component. Draw the phasor diagram to avoid sign errors.
Optics (14 marks)
Every answer in Ray Optics should include a labelled ray diagram even if the question does not explicitly ask for one. Examiners award 1-2 marks just for diagrams. In Wave Optics, the YDSE derivation should be written in full — path difference formula, condition for bright/dark fringes, and fringe width expression. For polarisation, remember Brewster's angle and Malus' Law.
Dual Nature, Atoms, and Nuclei (12 marks)
Photoelectric effect questions almost always involve graph interpretation. Know the three graphs: photocurrent vs intensity, photocurrent vs voltage (stopping potential), and stopping potential vs frequency. For Bohr model, memorise the expressions for radius, velocity, energy, and frequency for the nth orbit. Nuclear physics involves straightforward formula application — mass defect, binding energy per nucleon, and radioactive decay.
Electronic Devices (7 marks)
Learn the circuit diagrams for half-wave and full-wave rectifiers. Know the truth tables for all five logic gates (AND, OR, NOT, NAND, NOR). Transistor as a switch and as an amplifier are common 3-mark questions. The V-I characteristics of a p-n junction diode (forward and reverse bias) is a guaranteed question in most years.
EM Waves (4 marks)
This is the smallest unit but offers easy marks. Memorise the EM spectrum in order (Radio → Microwave → Infrared → Visible → UV → X-ray → Gamma). Know the source and one application of each type. Displacement current (Maxwell's correction to Ampere's Law) is a common 2-mark question.
JEE and NEET Overlap Notes
If you are preparing for competitive exams alongside boards, here is how the chapter-wise overlap works.
| Chapter | Board Marks | JEE Relevance | NEET Relevance | Overlap Level |
|---|---|---|---|---|
| Electrostatics (Ch 1-2) | 16 | Very High | High | Strong — board prep covers 65% of JEE |
| Current Electricity (Ch 3) | 7-8 | High | Medium | Strong — same concepts, tougher numericals in JEE |
| Magnetic Effects (Ch 4-5) | 5-8 | High | Medium | Strong — JEE adds rotating coils, toroids |
| EMI and AC (Ch 6-7) | 8-10 | High | Medium | Strong — LCR is heavily tested in JEE |
| EM Waves (Ch 8) | 4 | Low | Low | Weak — rarely tested beyond MCQ |
| Ray Optics (Ch 9) | 7-8 | Very High | High | Very Strong — JEE goes deeper into prisms |
| Wave Optics (Ch 10) | 6-7 | Very High | High | Strong — YDSE, diffraction are JEE staples |
| Modern Physics (Ch 11-13) | 12 | Very High | Very High | Very Strong — NEET loves this unit |
| Semiconductors (Ch 14) | 7 | Low | Low | Weak — JEE/NEET rarely tests this deeply |
For JEE aspirants: After finishing board-level Electrostatics and Optics, add HC Verma or DC Pandey for tougher numericals. Board prep covers about 60-70% of JEE Physics requirements.
For NEET aspirants: Modern Physics (photoelectric effect, Bohr model, nuclear physics) carries the highest NEET weightage. Board-level preparation for these chapters is sufficient for most NEET questions. Supplement with NEET previous year papers.
Month-Wise Preparation Timeline
| Month | Focus | Target |
|---|---|---|
| August-September | Complete Electrostatics + Current Electricity + Optics | 44 marks covered |
| October | Magnetic Effects + EMI + AC | 61 marks covered |
| November | Modern Physics + Semiconductors + EM Waves | All chapters complete |
| December | Numerical practice (215+ problems) + Derivation writing | Speed and accuracy |
| January | Previous year papers (2020-2026) + Sample papers | Exam simulation |
| February | Revision + Weak area focus + Practical preparation | Final polish |
Frequently Asked Questions
Which unit carries the highest marks in CBSE Class 12 Physics 2027?
Electrostatics and Current Electricity together carry 16 marks, making them the highest-weightage group. Magnetic Effects and EMI together carry 17 marks. If you are looking at individual units, Optics at 14 marks is the highest single standalone unit. Prioritise these three groups — they account for 47 out of 70 marks, which is 67% of the paper.
What percentage of the Physics paper is numericals?
Approximately 40-50% of the 70-mark paper consists of numerical problems. This translates to roughly 28-35 marks. Electrostatics, Current Electricity, and Optics contribute the most numericals. The 5-mark questions in Section D are almost always numericals or derivation-based. Practising 200+ numericals across chapters is the single best way to boost your Physics score.
Is the Communication Systems chapter included in the 2027 syllabus?
No. Communication Systems (Chapter 15) was permanently removed from the CBSE Class 12 Physics syllabus from the 2022-23 session onwards. It will not appear in the 2027 exam. The marks were redistributed to other units. Do not waste time on this chapter.
What is the best order to study Physics chapters?
Start with Current Electricity (most predictable, formulaic), then Electrostatics (highest marks), then Ray Optics and Wave Optics (14 marks combined with diagram-heavy scoring). After these, cover EMI and AC, then Magnetic Effects. Next, do Semiconductors (theory-based, easier). Finish with Dual Nature, Atoms, Nuclei, and finally EM Waves. This order maximises early marks accumulation and builds confidence.
How should I prepare for the 30-mark practical exam?
The practical exam includes two experiments (16 marks), practical record and viva (7 marks), project work (3 marks), and activities (4 marks). Practise drawing circuit and ray diagrams neatly. Record at least 5 observations per experiment. For viva, revise the theory behind each experiment and common questions like the principle of potentiometer, total internal reflection, and diode characteristics. Most students score 25-28 out of 30.
Can I score 60+ out of 70 with just two months of preparation?
Yes, with a disciplined plan. Spend 40% of your time on Electrostatics, Current Electricity, and Optics (30+ marks). Dedicate 30% to Magnetic Effects, EMI/AC, and Semiconductors (24+ marks). Use 15% for remaining chapters and 15% for solving previous year papers. The key factors are daily numerical practice and writing derivations by hand. Students who score 60+ consistently report that solving 10+ previous year papers was the single most effective strategy.
Which derivations are most important?
The top five most-repeated derivations are: Gauss's Theorem application, YDSE fringe width expression, Biot-Savart Law for circular loop, Lens maker's equation, and Bohr model energy levels. These five alone can account for 15-25 marks. Practise writing each one in full, with diagrams, under timed conditions.
How much overlap is there between board Physics and JEE/NEET?
Board preparation covers roughly 60-70% of JEE Physics and 70-80% of NEET Physics for the overlapping chapters. Electrostatics, Optics, and Modern Physics have the strongest overlap. Semiconductors and EM Waves have minimal competitive exam relevance. For JEE, add HC Verma or Irodov for advanced numericals. For NEET, supplement with NEET previous year papers — board NCERT is sufficient for most questions.
How many marks can I score from just NCERT?
NCERT textbook alone can fetch you 55-60 marks out of 70 if studied thoroughly. Every MCQ and theory question is NCERT-based. For numericals beyond NCERT examples, use the NCERT exemplar and previous year papers. The key is reading NCERT line by line, including the "Points to Ponder" and "Did You Know" sections that often inspire MCQs.
What should I do in the last 15 days before the exam?
Focus entirely on revision and practice. Solve 2 previous year papers per day under timed conditions. Revise all derivations by writing them out. Go through your formula sheet daily. Practise ray diagrams and circuit diagrams. Do not start any new topic. Sleep 7-8 hours and eat well. Confidence comes from revision, not new learning.
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