How do I score 90+ in the Physics board exam?

Three pillars: learn the derivations in your syllabus step by step, practise numericals until the method is automatic, and draw neat, labelled ray and circuit diagrams. Then solve the 2026-27 CBSE sample paper and recent board papers under time.

Which Physics units carry the most marks?

CBSE Class 12 (2026-27) gives marks for pairs of units: EM Waves + Optics 18, Magnetism + EMI and AC 17, Electrostatics + Current Electricity 16, Dual Nature + Atoms and Nuclei 12, Electronic Devices 7 — 70 in all. In CBSE Class 10 Science, Effects of Current (electricity and magnetism) is 13 marks and Natural Phenomena (light and the human eye) is 12.

How do I solve Physics numericals faster?

Use a fixed method: write what is given (with units), what you must find, the formula, the substitution, the calculation and the answer with units. The structure prevents silly mistakes and earns step marks even if the final answer slips.

Should I memorise Physics derivations?

Understand first, then memorise. If you follow the logic, you can rebuild a step you forget. Write each derivation several times and practise reproducing it from memory, with its diagram.

How do I study Physics if I am weak at Maths?

Board Physics mostly needs basic algebra and trigonometry. Practise unit conversion, powers of ten, standard trigonometric values and rearranging formulas (V = IR → I = V/R). With these four skills, numericals become manageable.

How to Study Physics for Board Exam

Physics scoring comes down to three things: formula mastery, numerical practice and neat diagrams. Many students struggle because they read Physics like a textbook instead of solving it like Maths. Physics is a doing subject — you learn it by solving.

The Three Kinds of Physics Questions

Type	Strategy
Numericals	Formula, substitution, calculation. Show every step and include units.
Theory and derivations	Use the textbook's terms, write step by step and include the diagram.
Diagrams and short answers	Neat, labelled diagrams; precise definitions; differences in a table.

CBSE Class 12 Physics — Unit-Wise Focus (2026-27)

Units	Marks	Focus on
Electrostatics + Current Electricity	16	Coulomb's law, field and potential of a dipole, capacitor combinations, Kirchhoff's rules, Wheatstone bridge
Magnetic Effects and Magnetism + EMI and AC	17	Biot–Savart and Ampère's laws, force on a conductor, moving coil galvanometer, Faraday's and Lenz's laws, AC generator, transformer
EM Waves + Optics	18	EM spectrum, mirror and lens formulas, ray diagrams, total internal reflection, prism, Young's double slit, single-slit diffraction
Dual Nature + Atoms and Nuclei	12	Photoelectric effect, de Broglie wavelength, Bohr model, hydrogen spectrum, binding energy
Electronic Devices	7	Energy bands, p-n junction, diode characteristics, diode as a rectifier

Logic gates, transistors and polarisation are not in the 2026-27 syllabus.

CBSE Class 10 Physics — Chapter Focus

Chapter	Focus on
Electricity	V = IR, resistors in series and parallel, heating effect (H = I²Rt), electric power and energy
Magnetic Effects of Electric Current	Field patterns, field of a straight wire and solenoid, force on a conductor, Fleming's left-hand rule, domestic circuits
Light — Reflection and Refraction	Mirror and lens formulas, sign convention, ray diagrams, power of a lens
The Human Eye and the Colourful World	Defects of vision and their correction, refraction through a prism, dispersion, scattering

In Class 10, Effects of Current is 13 marks and Natural Phenomena 12. The electric motor, electromagnetic induction and the generator are assessed only by your school.

Physics chapter-wise practice

Super Tutor has Physics formula sheets, revision notes and practice quizzes for Class 10 and 12.

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How to Solve Numericals — Step Method

Given: list every value with units — for example, V = 12 V, R₁ = 4 Ω, R₂ = 6 Ω.
To find: the current, I.
Formula: R (series) = R₁ + R₂; V = IR.
Substitute: R = 4 + 6 = 10 Ω; I = 12 / 10.
Answer with unit: I = 1.2 A.

Marking schemes give marks for correct working, so a wrong final answer can still earn most of the marks if your steps are right. Always show them.

Diagram Rules

Pencil for drawing, pen for labels.
Use a ruler for rays and circuit wires.
Draw large — small diagrams lose detail.
Label everything: F, C, principal axis, object and image.
Put arrows on rays to show the direction of light.
Use standard circuit symbols for cells, resistors, ammeters and voltmeters.

Key Class 12 Derivations

Electric field of a dipole (axial and equatorial) — Electrostatics
Capacitance of a parallel plate capacitor — Electrostatics
Magnetic field on the axis of a circular loop (Biot–Savart) — Magnetism
Lens maker's equation — Ray Optics
Fringe width in Young's double slit experiment — Wave Optics
Radius and energy of orbits in Bohr's model — Atoms

Study Schedule for Physics

Phase	Activity
Concepts	Read the NCERT chapter, understand the theory, solve the examples and exercises
Practice	Extra numericals per chapter (NCERT Exemplar is a good next step); practise every derivation
Revision	Daily formula sheet, sample paper and past papers under time
Final weeks	Full papers every couple of days; diagrams and derivations from memory

Common Mistakes That Cost Marks

Mistake	Fix
Missing units	Always write the unit: A, V, Ω, m, N, J
Derivation without a diagram	Draw the diagram the derivation is based on
Wrong sign convention	Use the New Cartesian convention consistently — for example, u is negative for a real object
Skipped steps	Write formula → substitution → calculation, even when it feels obvious
Untidy diagrams	Ruler, large size, clear labels

CBSE marks and topics from the CBSE Curriculum 2026-27 (cbseacademic.nic.in). ICSE students should follow the CISCE syllabus and specimen papers on cisce.org.

How to Study Physics for Board Exam — Score 90+ Strategy