CBSE Class 12 Physics 2026-27: Important Chapters, Derivations and Study Plan
Class 12 physics asks for three different skills in one paper: clear theory with derivations, numerical problem-solving without a calculator, and reasoning about situations you have not seen before. Most students are strong in one or two of these. The marks are lost in the third. A student who can derive the lens maker's formula may still freeze on a case study about wearable semiconductors; a student who is quick with numericals may lose easy marks on a poorly labelled ray diagram.
This guide is written for the 2026-27 batch, who sit the board exam in 2027. It covers the official unit-wise weightage, the question paper design, what the 2026-27 syllabus includes and leaves out (including topics older guides still carry), the practical exam, a chapter-by-chapter guide to all 14 NCERT chapters with the derivations that matter, a month-by-month plan, a last-30-days checklist, common mistakes, and how to balance the board paper with JEE, NEET and CUET. The syllabus and paper details have been checked against CBSE's 2026-27 curriculum and sample question paper.
CBSE Class 12 Physics 2026-27 at a glance
Subject code – Physics (042).
Marks – 70 for the theory paper and 30 for the practical exam, 100 in total.
Paper – 3 hours, 33 compulsory questions in five sections (A to E), with internal choice in some questions.
Syllabus – nine units and 14 chapters across Part I and Part II of the NCERT Class 12 textbook.
No calculators – calculators are not allowed; the paper gives values of physical constants such as c, e, h and the electron and proton masses.
No change – CBSE's 2026-27 sample paper states there is no change in the question paper design and assessment pattern for this session.
Class 12 has one main board exam; the two-exam system introduced from 2026 applies to Class 10. In 2026, Class 12 practical exams began in January and theory exams began on 17 February. CBSE has not yet published the 2027 date sheet, so check cbse.gov.in for the exact dates.
Syllabus and unit-wise weightage
The 2026-27 curriculum groups the nine units into five mark blocks:
| Unit | Chapters (NCERT) | Marks (out of 70) |
|---|---|---|
| I. Electrostatics; II. Current Electricity | 1. Electric Charges and Fields; 2. Electrostatic Potential and Capacitance; 3. Current Electricity | 16 |
| III. Magnetic Effects of Current and Magnetism; IV. Electromagnetic Induction and Alternating Currents | 4. Moving Charges and Magnetism; 5. Magnetism and Matter; 6. Electromagnetic Induction; 7. Alternating Current | 17 |
| V. Electromagnetic Waves; VI. Optics | 8. Electromagnetic Waves; 9. Ray Optics and Optical Instruments; 10. Wave Optics | 18 |
| VII. Dual Nature of Radiation and Matter; VIII. Atoms and Nuclei | 11. Dual Nature of Radiation and Matter; 12. Atoms; 13. Nuclei | 12 |
| IX. Electronic Devices | 14. Semiconductor Electronics: Materials, Devices and Simple Circuits | 7 |
| Total theory | 14 chapters | 70 |
| Practical | Experiments, activities, project, record, viva | 30 |
Electricity and magnetism (the first two blocks) carry 33 marks, nearly half of the theory paper, across seven chapters. Optics with EM waves carries 18 marks, the single largest block. Modern physics (Dual Nature, Atoms, Nuclei) at 12 marks is compact and often numerical, and Semiconductors at 7 marks is a short chapter with a narrow syllabus. The practical 30 marks are almost entirely within your control.
What the 2026-27 syllabus includes and leaves out
The syllabus has been trimmed over recent years, and the curriculum spells out several "qualitative only" and "no derivation" limits. Older guides, including an earlier version of this post, list topics that are no longer tested. The curriculum also notes that content marked in NCERT textbooks as excluded for 2026-27 will not be assessed in the board exam.
Limits written into the 2026-27 curriculum
- Energy stored in a capacitor: no derivation, formulae only.
- Ampere's law: applications to an infinitely long straight wire; the straight solenoid is qualitative only.
- Magnetism and Matter: the bar magnet as an equivalent solenoid, the field of a bar magnet along and perpendicular to its axis, and torque on a bar magnet are all qualitative only.
- Electromagnetic waves: transverse nature is a qualitative idea only.
- Young's double slit experiment: the fringe width expression is required but not its derivation.
- Single-slit diffraction: the width of the central maximum is qualitative only.
- Hydrogen line spectra: qualitative treatment only, although Bohr's expressions for radius, velocity and energy of the nth orbit are included.
- Energy bands: qualitative ideas only.
Topics older guides include that are not in the 2026-27 syllabus
- Transistors and logic gates. The Semiconductor chapter now covers energy bands, intrinsic and extrinsic semiconductors, the p-n junction, diode I-V characteristics and the diode as a rectifier.
- Radioactivity, half-life and decay laws. Nuclei now covers composition and size, nuclear force, mass-energy relation, mass defect, binding energy per nucleon, fission and fusion.
- The Compton effect, which is not part of Dual Nature of Radiation and Matter.
- The potentiometer, which is not listed in Current Electricity or in the practical list.
- Earth's magnetism and magnetic elements as a theory topic.
The CBSE Physics curriculum for 2026-27 does not list any Class 12 topics as "formative assessment only" (Chemistry does). What is in the syllabus is examinable; what is not listed is not.
Question paper design for 2027
This structure is taken from CBSE's 2026-27 Physics sample question paper:
| Section | Questions | Type | Marks each | Section total |
|---|---|---|---|---|
| A | 1–16 | 12 MCQs + 4 assertion–reason | 1 | 16 |
| B | 17–21 | Very short answer | 2 | 10 |
| C | 22–28 | Short answer | 3 | 21 |
| D | 29–30 | Case study-based | 4 | 8 |
| E | 31–33 | Long answer | 5 | 15 |
| Total | 33 | 70 |
There is no overall choice. In the sample paper, internal choice is given in two questions in Section B, one in Section C, and all three long answers in Section E. Note the order: case studies come in Section D, before the long answers.
The thinking skills the paper tests
| Type of question | Marks | Share (approx.) |
|---|---|---|
| Remembering and understanding | 27 | 38% |
| Applying | 22 | 32% |
| Analysing, evaluating and creating | 21 | 30% |
Only about 38% of the paper rewards recall. The rest asks you to apply physics to new situations. The 2026-27 sample paper shows the style: why a car engine is harder to start on a cold day, why diamonds sparkle, why a falling magnet slows through a metal ring, why silicon is used in chips rather than diamond, and how flexible polymer semiconductors might work in clothing. Learning derivations is necessary, but it is not enough.
How to handle each question type
MCQs – Many are one-line calculations or concept checks. Write a quick working line; options are often built on a common error such as a factor of 2 or a series/parallel mix-up.
Assertion–reason – Judge each statement separately. In the sample paper, one reason states that fringe width is proportional to slit separation, which is the wrong way round; spotting that decides the answer.
2-mark questions – Definitions with one consequence, short numericals, or "state and explain" questions. Be precise and brief.
3-mark questions – Short derivations (Snell's law from Huygens' principle), binding energy calculations, galvanometer conversion, or three-part "explain why" questions.
Case studies – Four 1-mark parts built on a passage. Read the passage once for context and once for the physics being tested.
5-mark questions – Usually a mix of derivation, diagram and numerical: capacitor combinations, microscope or telescope magnification, transformer or LCR resonance. Plan the structure before writing.
Practical exam: 30 marks
The 2026-27 curriculum sets the practical evaluation as follows:
| Component | Marks |
|---|---|
| Two experiments, one from each section | 7 + 7 |
| Practical record (experiments and activities) | 5 |
| One activity from any section | 3 |
| Investigatory project | 3 |
| Viva on experiments, activities and project | 5 |
| Total | 30 |
Your record must include at least 8 experiments (4 from each section), at least 6 activities (3 from each section), and the report of your project. Section A experiments are mostly electrical: resistivity from a V–I graph, metre bridge, laws of combination of resistances, galvanometer resistance by half-deflection and figure of merit, conversion of a galvanometer to a voltmeter or ammeter, and the frequency of AC mains with a sonometer. Section B experiments are mostly optical: focal lengths of mirrors and lenses, the prism's angle of minimum deviation, refractive index using a travelling microscope or with a liquid, and the I-V characteristic of a p-n junction diode.
Learn each practical's aim, principle, formula, circuit or ray diagram, precautions and sources of error.
Practise drawing graphs neatly with labelled axes, a sensible scale and units.
Keep the record complete and signed through the year, not written in December.
Choose a project you actually do yourself; the viva will test it.
Expect viva questions on why, not just how: why a metre bridge balance point is kept near the middle.
Chapter-by-chapter guide to all 14 chapters
For each chapter: what the board tests, the key results and derivations, the questions to expect, and the errors that cost marks. The order follows the NCERT textbook.
1. Electric Charges and Fields
What is tested: Conservation of charge, Coulomb's law and superposition, electric field and field lines, the electric dipole, torque on a dipole, electric flux, and Gauss's theorem with its three standard applications.
Key derivations: Field of a dipole on the axial and equatorial lines; torque on a dipole in a uniform field (τ = p × E); field due to an infinitely long straight wire (λ/2πε₀r), an infinite plane sheet (σ/2ε₀), and a thin spherical shell inside (zero) and outside (as if the charge were at the centre).
Typical questions: Flux through a Gaussian surface when its radius changes (it does not change, as in the sample paper); superposition of forces from three charges; a derivation-based long answer on Gauss's law applications.
Common errors: Adding forces as numbers instead of vectors. Drawing field lines that cross or that start on negative charges. Choosing a Gaussian surface without explaining why the field is constant over it.
2. Electrostatic Potential and Capacitance
What is tested: Potential due to a point charge, a dipole and a system of charges; equipotential surfaces; potential energy of two charges and of a dipole in a field; conductors, dielectrics and polarisation; capacitors in series and parallel; the parallel plate capacitor with and without a dielectric; energy stored (formula only).
Key results: V = kq/r; E = −dV/dr (field is the negative of the potential gradient); C = ε₀A/d, and C = Kε₀A/d with a dielectric filling the gap; U = ½CV² = Q²/2C = ½QV.
Typical questions: Work done to bring a charge to the midpoint of two charges; minimum and maximum capacitance from three capacitors; why an isolated conductor cannot have a large capacitance; the minimum radius of a sphere before air breaks down.
Common errors: Treating potential as a vector. Confusing series and parallel formulas for capacitors (they are the reverse of resistors). Forgetting that the field inside a conductor in electrostatic equilibrium is zero.
3. Current Electricity
What is tested: Drift velocity and mobility, Ohm's law, V-I characteristics, resistivity and its temperature dependence, internal resistance and emf, cells in series and parallel, Kirchhoff's rules and the Wheatstone bridge.
Key derivations: I = neAv_d; the relation between drift velocity and relaxation time leading to ρ = m/ne²τ; the balance condition of the Wheatstone bridge from Kirchhoff's rules; equivalent emf and internal resistance for cells in series and parallel.
Typical questions: Power in bulbs connected in series and parallel; a balanced bridge where the galvanometer arm carries no current; the path of free electrons with and without a field; "explain why" questions on body resistance and electric shock.
Common errors: Inconsistent sign conventions in Kirchhoff's loop rule. Forgetting that a balanced bridge's middle arm can be removed. Confusing emf with terminal voltage.
4. Moving Charges and Magnetism
What is tested: Oersted's experiment, Biot–Savart law and its application to a circular loop, Ampere's law for a long straight wire, force on a moving charge in magnetic and electric fields, force on a conductor, force between parallel conductors, torque on a current loop, the loop as a magnetic dipole, and the moving coil galvanometer with its conversion to an ammeter or voltmeter.
Key derivations: Field on the axis of a circular loop and at its centre (μ₀I/2R); field of a long straight wire using Ampere's law (μ₀I/2πr); force between parallel wires and the definition of the ampere; torque τ = NIAB sin θ; shunt and series resistance for conversion.
Typical questions: Field at the centre of a semicircular loop; shunt resistance to extend an ammeter's range; why a galvanometer coil is wound on a metal frame; direction of force on a charge using the right-hand rule.
Common errors: Using Ampere's law derivations for the solenoid, which is qualitative only this year. Losing the direction in F = qv × B. Connecting the shunt in series.
5. Magnetism and Matter
What is tested: The bar magnet, its equivalence to a solenoid, its field and the torque on it (all qualitative), magnetic field lines, para-, dia- and ferromagnetic substances, magnetisation, and the effect of temperature.
Key results: Properties of the three classes of materials: relative permeability, susceptibility, behaviour in a non-uniform field, and the effect of temperature. Gauss's law for magnetism: the net magnetic flux through any closed surface is zero.
Typical questions: Identifying a material from its relative permeability; a superconductor near a bar magnet (perfect diamagnet); stating Gauss's law for magnetism and its significance.
Common errors: Writing long quantitative derivations for bar magnet fields that the syllabus limits to qualitative treatment. Mixing up the signs of susceptibility for dia- and paramagnetic materials.
6. Electromagnetic Induction
What is tested: Faraday's laws, induced emf and current, Lenz's law, and self and mutual induction.
Key results: ε = −dΦ/dt; motional emf Blv; Lenz's law as conservation of energy; self-inductance of a long solenoid L = μ₀n²Al and mutual inductance of coaxial solenoids.
Typical questions: Direction of induced current using Lenz's law; why a magnet falling through a ring has acceleration less than g; how self-inductance changes when a coil's dimensions change.
Common errors: Stating Lenz's law without applying it to the actual situation. Forgetting the negative sign's meaning. Treating flux and flux density as the same thing.
7. Alternating Current
What is tested: Peak and RMS values, reactance and impedance, the LCR series circuit (phasors only), resonance, power and power factor, wattless current, the AC generator and the transformer.
Key results: I_rms = I₀/√2; X_L = ωL, X_C = 1/ωC; Z = √(R² + (X_L − X_C)²); resonance at ω₀ = 1/√(LC); average power P = V_rms I_rms cos φ; transformer ratio V_s/V_p = N_s/N_p.
Typical questions: Resonance and its use in tuning a radio; the working of a transformer with a labelled diagram and reasons for energy loss; resistance ratio of two bulbs from their ratings.
Common errors: Adding R, X_L and X_C arithmetically. Saying a transformer works on DC. Leaving out the core, windings or labels in the transformer diagram.
8. Electromagnetic Waves
What is tested: The basic idea of displacement current, characteristics of EM waves, their transverse nature (qualitative), and the electromagnetic spectrum with elementary uses.
Key results: c = E₀/B₀ in vacuum; v = 1/√(με) in a medium; the order of the spectrum from radio waves to gamma rays and one use of each band.
Typical questions: Direction of propagation from an equation for E; refractive index of a medium from E₀ and B₀; identifying the band from a frequency. This chapter is short but reliable for Section A and B marks.
Common errors: Mixing up wavelength order in the spectrum. Reading the wrong sign for the direction of propagation.
9. Ray Optics and Optical Instruments
What is tested: Spherical mirrors and the mirror formula, refraction, total internal reflection and optical fibres, refraction at spherical surfaces, thin lenses, lens maker's formula, magnification, power, combinations of thin lenses, refraction through a prism, and microscopes and telescopes.
Key derivations: Mirror formula; refraction at a spherical surface; lens maker's formula; thin lens formula; combination of lenses in contact (1/F = 1/f₁ + 1/f₂); prism formula at minimum deviation; magnifying power of a compound microscope and an astronomical telescope.
Typical questions: Total internal reflection in diamond; a lens immersed in water; position of the image in a compound microscope and its magnifying power; telescope magnification at infinity and at the near point.
Common errors: Sign convention errors, the most common loss of marks in this chapter. Ray diagrams without arrows or with rays that do not pass through the right points. Using the microscope formula for a telescope.
10. Wave Optics
What is tested: Wavefronts and Huygens' principle, proof of the laws of reflection and refraction using wavefronts, interference, Young's double slit experiment (final fringe width expression only), coherent sources, and single-slit diffraction (central maximum width qualitative).
Key derivations: Snell's law and the law of reflection using Huygens' construction. Fringe width β = λD/d is to be used, not derived.
Typical questions: Derive Snell's law using Huygens' principle; shape of a wavefront from a distant star (plane); fringe width calculation; conditions for sustained interference.
Common errors: Huygens' construction diagrams without labelled wavefronts or time steps. Inverting the fringe-width relation. Spending time deriving the YDSE fringe width, which is not required.
11. Dual Nature of Radiation and Matter
What is tested: The photoelectric effect, Hertz's and Lenard's observations, Einstein's photoelectric equation, the experimental study of the effect, and de Broglie's relation.
Key results: K_max = hν − φ₀; threshold frequency ν₀ = φ₀/h; stopping potential eV₀ = K_max; λ = h/p, and for an electron accelerated through V, λ = h/√(2meV).
Typical questions: Why intensity does not change the maximum kinetic energy; which observations contradict the wave theory; graphs of photocurrent against potential or of stopping potential against frequency.
Common errors: Confusing intensity with frequency. Unit errors between eV and joules. Graphs with unlabelled axes or intercepts.
12. Atoms
What is tested: The alpha-particle scattering experiment, Rutherford's model, the Bohr model of hydrogen with expressions for the radius, velocity and energy of the nth orbit, and hydrogen line spectra (qualitative).
Key derivations: rₙ ∝ n², vₙ ∝ 1/n, Eₙ = −13.6/n² eV. Bohr's quantisation condition mvr = nh/2π, and its explanation using de Broglie waves.
Typical questions: Minimum energy to ionise hydrogen from its ground state; why spectral lines are a fingerprint of an element; results of the scattering experiment.
Common errors: Sign errors in energy levels. Treating the qualitative spectral series as a derivation question.
13. Nuclei
What is tested: Composition and size of the nucleus, nuclear force, mass-energy relation, mass defect, binding energy per nucleon and its variation with mass number, fission and fusion.
Key results: R = R₀A^(1/3); Δm = [Zm_p + (A − Z)m_n] − M; BE = Δm × 931.5 MeV/u; the binding energy curve peaks near A = 56, making those nuclei the most tightly bound.
Typical questions: Binding energy per nucleon of a given nucleus (as in the sample paper); what the curve says about fission and fusion; properties of nuclear force.
Common errors: Arithmetic errors in mass defect without a calculator; practise these. Forgetting to divide by A for binding energy per nucleon. Writing radioactivity answers that the syllabus no longer includes.
14. Semiconductor Electronics: Materials, Devices and Simple Circuits
What is tested: Energy bands (qualitative), intrinsic and extrinsic semiconductors, p- and n-type materials, the p-n junction, diode I-V characteristics in forward and reverse bias, and the diode as a rectifier.
Key results: Band gap decides conduction; in an intrinsic semiconductor, electrons equal holes. Formation of the depletion layer and barrier potential. Half-wave and full-wave rectifier circuits with input and output waveforms.
Typical questions: Comparing band diagrams of metals, insulators and semiconductors; why diamond is an insulator but tin a conductor; a case study on semiconductors; rectifier circuit diagram and working.
Common errors: Unlabelled band diagrams. Wrong diode orientation in rectifier circuits. Output waveforms that do not match the circuit.
The derivations to master
Derivations are where preparation pays most reliably. The following list is built from the 2026-27 syllabus; anything marked "no derivation" or "qualitative only" in the curriculum is deliberately left out.
- Electric field of a dipole on its axis and on its equatorial line; torque on a dipole in a uniform field.
- Field due to a long straight wire, an infinite plane sheet and a thin spherical shell using Gauss's theorem.
- Potential due to a point charge and a dipole; potential energy of a dipole in a uniform field.
- Capacitance of a parallel plate capacitor with and without a dielectric; series and parallel combinations.
- Drift velocity and I = neAv_d; resistivity in terms of relaxation time; Wheatstone bridge balance; combinations of cells.
- Magnetic field on the axis of a circular loop (Biot–Savart); field of a long straight wire (Ampere's law); force between parallel conductors; torque on a current loop; galvanometer conversion.
- Self-inductance of a long solenoid; mutual inductance of coaxial solenoids; motional emf.
- Impedance of a series LCR circuit using phasors; resonant frequency; average power; transformer relations.
- Mirror formula; refraction at a spherical surface; lens maker's formula; thin lens formula; lenses in contact; prism formula; magnifying power of microscope and telescope.
- Laws of reflection and refraction using Huygens' principle.
- Bohr's expressions for radius, velocity and energy of the nth orbit.
For each derivation, practise the diagram, the starting principle, the key step and the final result as a one-page answer. Write each one out from memory at least three times before the board exam.
Month-by-month plan: April to the board exam
| Month | Focus | Practice target |
|---|---|---|
| April–May | Electric Charges and Fields; Electrostatic Potential and Capacitance | All NCERT exercises; first derivation notebook entries |
| June | Current Electricity | Circuit numericals daily; revise Class 11 vectors and calculus basics |
| July | Moving Charges and Magnetism; Magnetism and Matter | First periodic test; start the practical record |
| August | Electromagnetic Induction; Alternating Current | Section A electrical experiments in the lab |
| September | Electromagnetic Waves; Ray Optics | Sign-convention drill; revise all of electricity and magnetism |
| October | Wave Optics; Dual Nature of Radiation and Matter | Section B optical experiments; choose and start the project |
| November | Atoms; Nuclei; Semiconductor Electronics | Finish the syllabus; complete NCERT and exemplar |
| December | Full revision; derivation notebook | 2026-27 sample paper timed; two full papers a week |
| January | Practical exam, record and viva; pre-boards | Three full papers a week, checked against a marking scheme |
| February | Final revision | See the last-30-days checklist below |
Practical exams have typically been held in January, before the theory paper. Plan your practical revision so that it does not take all of January away from theory.
The last 30 days: a checklist
Solve one full paper every alternate day in exactly 3 hours, without a calculator.
Mark each paper against the CBSE marking scheme, then update the error log.
Write every derivation on the list above from memory at least once.
Redraw the key diagrams: dipole fields, galvanometer, transformer, microscope, telescope.
Drill sign conventions with ten mirror and lens numericals.
Revise the qualitative-only topics as short, precise answers.
Practise two case studies a day from the sample paper and exemplar.
Revise all definitions and SI units on one sheet.
Re-read NCERT chapter summaries and "points to ponder".
Keep the final week for revision and rest, not new material.
Common mistakes that cost marks (and the fix for each)
Vectors added as numbers – Draw the force or field vectors and resolve them before adding.
Field lines crossing – Field lines never cross; check every diagram.
Gaussian surface not justified – State why the field is constant and normal over the chosen surface.
Potential treated as a vector – Potential is a scalar; add values with their signs.
Capacitor and resistor formulas swapped – For capacitors, parallel adds directly and series adds reciprocals.
Energy stored derived at length – The syllabus asks for formulae only; save the time.
Kirchhoff sign errors – Choose a loop direction and apply the same convention throughout.
emf confused with terminal voltage – Terminal voltage is emf minus the drop across internal resistance.
Right-hand rule misapplied – Practise the direction of F = qv × B and F = Il × B separately.
Shunt in series – A shunt for an ammeter goes in parallel; a voltmeter needs a high series resistance.
Solenoid derived quantitatively – The straight solenoid is qualitative only this year.
Lenz's law stated, not applied – Say what change is opposed and in which direction the current flows.
Reactances added directly – Use Z = √(R² + (X_L − X_C)²).
Transformer on DC – A transformer needs changing flux, so it works only with AC.
Sign convention in optics – Write the convention and the signs of u, v and f before substituting.
Ray diagrams without arrows – Every ray needs an arrow; use a ruler.
Fringe width relation inverted – β = λD/d; fringe width increases with wavelength and decreases with slit separation.
Intensity confused with frequency – Intensity changes the number of photoelectrons, not their maximum kinetic energy.
eV and joules mixed – Convert with 1 eV = 1.6 × 10⁻¹⁹ J before substituting.
Binding energy not per nucleon – Divide the total binding energy by A when asked for per nucleon.
Old syllabus answers – Do not write about transistors, radioactivity or the potentiometer; they are not in the 2026-27 syllabus.
Unlabelled graphs – Label both axes with quantities and units, and mark intercepts.
No units in final answers – Write the SI unit with every numerical answer.
Time lost in Section E – Plan each 5-mark answer in a few lines before writing.
Balancing boards with JEE, NEET and CUET
Physics is central to JEE and NEET, and CUET's physics paper is built on the Class 11 and 12 NCERT syllabus. The overlap with the board paper is large, but the skills are different.
Board – Rewards derivations, labelled diagrams, precise definitions and complete working. Written presentation is a skill in its own right.
JEE – Tests the same chapters at greater depth and speed, with multi-concept problems. Class 11 mechanics carries a large share.
NEET – Tests speed and accuracy on conceptual and numerical MCQs across Class 11 and 12. Precision with formulas and units matters.
CUET – MCQs closer to NCERT level; board preparation covers most of it, with timed MCQ practice added.
Syllabus gaps – Entrance syllabi are set by the conducting body, not CBSE, and can include topics that the 2026-27 CBSE syllabus leaves out. Check the current official syllabus before dropping any topic.
A workable pattern is to learn each chapter to board level first (NCERT text, derivations, exercises), then add entrance-level problems in the same week. From December, give board papers priority on alternate days. Entrance practice will not build the habit of writing derivations and labelled diagrams, and the board paper depends on it. For focused entrance support, see JEE physics tutors and NEET physics tutors.
For the other science papers, see our CBSE Class 12 Maths guide and CBSE Class 12 Chemistry guide.
When does a home tutor help?
Numericals fall apart – The student understands the theory but loses marks on calculations, especially without a calculator.
Derivations memorised, not understood – Small changes in the question lead to blank answers.
Weak mathematics – Vectors, calculus or trigonometry gaps keep appearing in physics problems.
Application questions – The student freezes on case studies and "explain why" questions.
Board and entrance together – The student needs a plan that covers both without burning out.
No feedback on written answers – Mock papers are attempted but not checked against a marking scheme.
What a good Class 12 physics session looks like
A useful session starts with the student explaining a concept back in their own words. Most of the time goes on problems the student solves while the tutor watches and corrects the reasoning, not only the answer. A good tutor checks derivations for the key step and the diagram, sets targeted practice, and every few weeks sets a timed paper and marks it the way a CBSE examiner would.
How to choose a tutor: a demo-class checklist
Did the tutor ask which chapters and question types worry the student most?
Do they know the 2026-27 syllabus limits, such as the qualitative-only topics?
Did the student solve problems during the demo, or only listen?
Did they check diagrams, units and sign conventions, not just answers?
Did they explain an idea a second way when the first did not work?
Did they propose a plan with dates, including practicals and mock papers?
If JEE or NEET matters, did they explain how to balance it with the board?
On NXTutors, you tell us what the student needs and we match you with two or three tutors. The first demo class is free, tutors who join go through an ID check, and switching tutors is free if the fit is not right. Across NXTutors, most home-tuition sessions fall between ₹800 and ₹2,500 an hour; Classes 11–12, IB/IGCSE and JEE/NEET sit toward the upper end; specialists for IB HL or JEE Advanced can charge more. Where a tutor falls depends on their experience, the city, and whether classes are at home or online.
Explore Class 12 physics home tutors, find a physics home tutor in Gurgaon, or book a free demo class to see how a session works before you decide.
Physics rewards understanding shown on paper. Learn the derivations properly, practise numericals without a calculator, draw every diagram with care, and sit enough timed papers that the real exam feels routine.
Frequently asked questions
Which unit carries the most marks in CBSE Class 12 Physics?
In CBSE Class 12 Physics, Optics with Electromagnetic Waves carries the most marks of any single block, 18 out of the 70 theory marks. Taken together, the two electricity and magnetism blocks carry 33 marks, nearly half of the paper, across seven chapters. Modern physics adds 12 marks and Semiconductor Electronics 7.
Are transistors and logic gates in the 2026-27 Class 12 Physics syllabus?
Transistors and logic gates are not in the 2026-27 CBSE Class 12 Physics syllabus, though older guides still carry them. The Semiconductor Electronics chapter now covers energy bands, intrinsic and extrinsic semiconductors, the p-n junction, diode I-V characteristics and the diode as a rectifier. At 7 marks, it is a short chapter with a narrow syllabus.
Do I need to derive the YDSE fringe width in Class 12 Physics?
Class 12 Physics students do not need to derive the YDSE fringe width, because the 2026-27 curriculum asks for the expression without derivation. You should still know how to use it and what it depends on. One sample-paper assertion–reason question states that fringe width is proportional to slit separation, which is the wrong way round.
Is radioactivity in the CBSE Class 12 Physics syllabus?
Radioactivity, half-life and decay laws are not in the 2026-27 CBSE Class 12 Physics syllabus. The Nuclei chapter covers composition and size, nuclear force, the mass-energy relation, mass defect, binding energy per nucleon, fission and fusion. Entrance syllabi are set by their own conducting bodies, so check yours before dropping any topic.
How are the 30 practical marks awarded in CBSE Class 12 Physics?
The 30 practical marks in CBSE Class 12 Physics come mainly from two experiments of 7 marks each and a viva of 5. The practical record adds 5, one activity 3 and an investigatory project 3. The record must include at least 8 experiments, 4 from each section, and at least 6 activities. Section A experiments are mostly electrical and Section B mostly optical.
Can I use a calculator in the Class 12 Physics board paper?
A calculator cannot be used in the CBSE Class 12 Physics board paper, since calculators are not allowed. Instead, the paper gives the values of physical constants such as c, e, h and the electron and proton masses. Practise numericals by hand through the year so that the arithmetic is quick and accurate on the day.
How can a Class 12 student prepare for Physics boards and JEE or NEET together?
A Class 12 student can prepare for Physics boards and JEE or NEET together by learning each chapter to board level first, then adding entrance-level problems in the same week. From December, give board papers priority on alternate days. Entrance practice does not build the habit of writing derivations and labelled diagrams, which the board paper depends on.
