Physics Formulas

This page is the single entry point to the site’s physics formulas — one hub per CBSE class, from Class 9 to Class 12. If you know which class you are studying in, you can reach the right page in seconds.

Not sure which class you need? The directory below settles it in one glance. Each class page lists that year’s formulas in the order of the NCERT textbook, with the symbol and SI unit beside every formula.

The material is prepared from the official NCERT textbooks prescribed by CBSE and reviewed against the current rationalised syllabus each academic year, so what you revise here matches what the board expects.

Physics Formulas by Class: the Complete Directory

Open the row for the class you study in. Each class page below holds every physics formula from that year’s syllabus, in NCERT order.

What each class page gives you

This stage-wise guide runs from Class 9 motion and force to Class 12 electrostatics and semiconductors, so you can pick the right page in one glance.

• Class 9 — physics begins inside the Science syllabus with motion, force and laws of motion, gravitation, work and energy, and sound. These are the first numerical problems a CBSE student meets.
• Class 10 — the application-heavy year: light, electricity, magnetic effects of current, and the human eye. This is where most students first use a formula to solve a board-style numerical.
• Class 11 — the systematic foundations: units and measurement, motion, laws of motion, work and energy, rotation, gravitation, properties of matter, thermodynamics, kinetic theory, oscillations, and waves. Expect derivations as much as numbers.
• Class 12 — the board year: electrostatics, current electricity, magnetism, electromagnetic induction, alternating current, electromagnetic waves, optics, dual nature of radiation, atoms, nuclei, and semiconductors. Keep this page open while you practise numericals.

How to Use the Physics Formula Pages

Use each class page as part of a short revision loop, not as a passive read.

1. Open your class page from the directory above.
2. Find the chapter you are studying right now.
3. Read each formula with its symbols and SI units.
4. Work one NCERT solved example and one exercise question using the formula.
5. Before the exam, close the page and recite each formula from memory.

This workflow ends with the only test that matters: can you recall the formula with the page shut?

Reciting from memory is exactly what the exam demands, because CBSE gives no printed formula sheet in physics exams. That is why these pages are built for revision from memory — not as a substitute for knowing the derivation, which questions still test.

The mistake that loses students the most marks is plugging numbers into a formula without first converting every quantity to SI units. km/h must become m/s, grams must become kilograms, and centimetres must become metres. The class pages list the SI unit beside every symbol, so the conversion is part of the entry, not an afterthought.

What This Physics Formula Library Contains

Every formula list on this site is organised chapter by chapter in the order of the official NCERT textbook for that class, so the pages work side by side with the book. Each entry carries four things:

• Formula — the equation as it appears in the NCERT text.
• Symbols — every letter defined, so nothing is assumed.
• SI units — the unit of each quantity, listed beside the symbol.
• Chapter reference — the chapter the formula belongs to.

The lists are prepared from the NCERT textbooks prescribed by CBSE and reviewed against the rationalised syllabus each academic year. You can verify any formula against its source on the official NCERT textbook portal, and the current curriculum is published on the official CBSE website.

The stages use formulas differently. Class 10 and Class 12 carry the chapters where numerical application is heaviest — electricity, light, electrostatics, optics — so those pages demand faster numerical work. Class 11 leans on derivations and conceptual foundations, so its pages support derivation practice as much as calculation.

Physics Formula FAQs

Which class page should I open for physics formulas?

Open the page for the class you study in — Class 9, 10, 11 or 12 from the directory above. Class 11 and 12 students should keep Class 9 and 10 pages handy too, because basic motion and force formulas reappear throughout senior physics.

Are the formulas arranged in the same order as the NCERT textbook?

Yes. Every formula list follows the chapter order of the NCERT textbook, so the page works side by side with the book. If the chapter is mentioned in class, you can find its formula page in seconds.

Can I revise the whole Class 12 physics syllabus from the formula page alone?

No. The class page is a complete formula reference for quick recall, but board readiness also needs the NCERT solved examples and the derivation behind each formula. Use the formula page alongside the textbook, not instead of it.

Why is there no physics formulas page for Classes 6 to 8?

Physics is taught inside the general Science syllabus up to Class 8 in CBSE and becomes a separate subject only from Class 9. That is why this directory honestly runs from Class 9 to Class 12.

Reference: NCERT textbooks (CBSE).