NCERT Books Class 12 Physics: Verified PDF Links
Looking for the official NCERT Class 12 Physics textbook? We have verified and linked the exact two-part edition prescribed by CBSE below. The ncert books class 12 physics set consists of Physics Part I (8 chapters) and Physics Part II (6 chapters), both in the current English-medium format used nationwide. All 14 chapter PDFs have been verified on ncert.nic.in (HTTP 200 status) and checked on 2026-07-11.
Using an outdated or incorrectly sourced PDF is a real risk — NCERT periodically updates chapter content and restructures topics during rationalisation. The links below pull directly from the official NCERT portal so you can be confident the content matches what your board exam is based on.
About the NCERT Class 12 Physics Textbook: Physics Part I and Physics Part II
Physics Part I and Physics Part II together form the official two-volume NCERT textbook for Class 12 physics, prescribed across all CBSE schools. Part I covers 8 chapters on electricity, magnetism, and electromagnetic phenomena; Part II covers 6 chapters on optics, modern physics, and semiconductor electronics. This is the complete, current edition for the 2026-27 academic session.
Physics Part I: What Each Chapter Covers (Chapters 1–8)
Chapter 1: Electric Charges and Fields (44 pages) — Introduces Coulomb’s law, electric field lines, and Gauss’s law as fundamental tools for calculating electric fields around point charges and charged surfaces.
Chapter 2: Electrostatic Potential and Capacitance (36 pages) — Explores electric potential energy, potential difference, and the design and behavior of capacitors and dielectrics in circuits.
Chapter 3: Current Electricity (26 pages) — Covers steady electric current, Ohm’s law, resistivity, and Kirchhoff’s circuit rules used to analyze real-world electrical networks.
Chapter 4: Moving Charges and Magnetism (29 pages) — Examines magnetic forces on charged particles, the Biot-Savart law, Ampere’s circuital law, and the motion of charges in magnetic fields.
Chapter 5: Magnetism and Matter (18 pages) — Investigates bar magnets, magnetic field lines around permanent magnets, and the magnetic properties of materials (paramagnetic, diamagnetic, ferromagnetic).
Chapter 6: Electromagnetic Induction (23 pages) — Details Faraday’s law of electromagnetic induction, Lenz’s law, and practical phenomena like eddy currents and self-inductance.
Chapter 7: Alternating Current (24 pages) — Analyzes AC circuits, impedance, power dissipation, resonance conditions, and the principle of transformers in power distribution.
Chapter 8: Electromagnetic Waves (14 pages) — Introduces displacement current, Maxwell’s equations in summary form, and the electromagnetic spectrum from radio to gamma rays.
Physics Part II: What Each Chapter Covers (Chapters 1–6)
Chapter 1: Ray Optics and Optical Instruments (34 pages) — Covers reflection and refraction laws, lens formula, magnification, and the design of optical instruments like microscopes and telescopes.
Chapter 2: Wave Optics (19 pages) — Examines Huygens’ principle, interference of light waves, diffraction patterns, and the concept of coherence.
Chapter 3: Dual Nature of Radiation and Matter (16 pages) — Explores the photoelectric effect, Einstein’s photon model, and de Broglie wavelength, unifying wave and particle views.
Chapter 4: Atoms (16 pages) — Presents the Bohr model of the hydrogen atom, energy levels, and the origin of atomic spectra through electron transitions.
Chapter 5: Nuclei (17 pages) — Discusses nuclear structure, radioactivity, decay modes, nuclear binding energy, and mass-energy equivalence.
Chapter 6: Semiconductor Electronics (21 pages) — Introduces semiconductors, p-n junction diodes, transistors, and logic gates as building blocks of modern electronic devices.
CBSE Class 12 Physics Unit-wise Marks Distribution (2026-27)
| Ch. | Chapter | Pages | Official PDF |
|---|---|---|---|
| 1 | ELECTRIC CHARGES AND FIELDS | 44 | |
| 2 | ELECTROSTATIC POTENTIAL AND CAPACITANCE | 36 | |
| 3 | Chapter Three CURRENT ELECTRICITY | 26 | |
| 4 | MOVING CHARGES AND MAGNETISM | 29 | |
| 5 | MAGNETISM AND MATTER | 18 | |
| 6 | ELECTROMAGNETIC INDUCTION | 23 | |
| 7 | ALTERNATING CURRENT | 24 | |
| 8 | ELECTROMAGNETIC WAVES | 14 |
| Ch. | Chapter | Pages | Official PDF |
|---|---|---|---|
| 1 | RAY OPTICS AND OPTICAL INSTRUMENTS | 34 | |
| 2 | WAVE OPTICS | 19 | |
| 3 | DUAL NATURE OF RADIATION AND MATTER | 16 | |
| 4 | ATOMS | 16 | |
| 5 | NUCLEI | 17 | |
| 6 | SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS | 21 |
The CBSE board exam is out of 70 theory marks (plus 30 internal assessment marks). Understanding how marks are distributed across units helps you allocate revision time efficiently. The table below maps each unit directly to the chapters you need to study.
| Unit | Chapters Covered | Theory Marks |
|---|---|---|
| Electrostatics & Current Electricity | Part I, Chapters 1–3 | 16 |
| Magnetic Effects & Magnetism, EM Induction & AC | Part I, Chapters 4–7 | 17 |
| Electromagnetic Waves & Optics | Part I, Chapter 8; Part II, Chapters 1–2 | 18 |
| Dual Nature, Atoms & Nuclei | Part II, Chapters 3–5 | 12 |
| Electronic Devices | Part II, Chapter 6 | 7 |
Total theory marks: 70 (source: CBSE Curriculum 2026-27, Senior Secondary Physics, checked 2026-07-12).
How to Use These Books for Board Exam Preparation
The order in which you read the two books matters because concepts build on each other. Here is a tested sequence tied directly to the marks distribution:
- Start with Part I Chapters 1–3 (Electrostatics & Current Electricity, 16 marks). These chapters introduce fundamental field concepts that recur throughout the course. Field visualization and Ohm’s law are prerequisites for understanding magnetism, so do not skip ahead.
- Next, complete Part I Chapters 4–7 (Magnetic Effects, Induction & AC, 17 marks). These chapters depend on your grasp of fields from Chapter 1 and apply Faraday’s law to real transformers and motors. Leave nothing vague here—the exam rewards precise statements of Lenz’s law and resonance conditions.
- Combine Part I Chapter 8 with Part II Chapters 1–2 (EM Waves & Optics, 18 marks). Despite their split location, these form one unit: electromagnetic waves explain light propagation, and ray/wave optics describes how light interacts with matter. Study them as a block in your final revision pass.
- Reserve Part II Chapters 3–6 (Modern Physics & Electronics, 19 marks combined) for your last revision pass. These chapters are shorter (14–21 pages each) and contain discrete topics that do not heavily depend on earlier chapters, so they are ideal for last-minute reinforcement.
| What You Should Do | Why It Helps |
|---|---|
| Open the unit-wise marks table above while you read each chapter. | You will see which chapters are weighted heavily (Optics & EM Waves at 18 marks) and know to spend extra time on detailed derivations there. |
| Finish all numerical problems at the end of each chapter before moving to the next chapter. | Numericals test your application of formulas and sign conventions—skipping them leaves gaps that exams always exploit. |
| When you reach Chapter 3 or later, keep Part I Chapters 1–2 notes nearby to cross-reference field definitions. | Examiners ask questions that blend electric and magnetic fields; having quick access to both definitions saves time and prevents confusion. |
A Note on the Current Electricity Chapter PDF Title
You may notice that the official NCERT PDF for Chapter 3 displays the title “Chapter Three CURRENT ELECTRICITY” rather than simply “CURRENT ELECTRICITY.” This unusual formatting is how NCERT has labeled the title metadata in that file—it is not a printing error, a fake copy, or a sign of corruption. The file is verified, safe, and contains the complete, correct content.
Additionally, this chapter is the only one in the registry that lacks the “title recovered” flag that appears on the other 13 chapters. This small metadata difference does not affect the content or the validity of the PDF. The file passed HTTP 200 verification on 2026-07-11 and is the official textbook you should use.
Related Study Resources
Once you have opened the textbook PDFs, you may want to explore other Class 12 study materials on this site. Visit the Class 12 study hub to find resources across all subjects, or check the Class 12 physics page for topic-wise guidance. Keep the unit-wise marks table above visible while you work through numericals to remind yourself which units are worth the most exam points.
Frequently Asked Questions
Is the NCERT Class 12 Physics textbook split into two separate books?
Yes. The official Class 12 physics textbook is published by NCERT as two separate volumes: Physics Part I (8 chapters) and Physics Part II (6 chapters). Both are prescribed for the full CBSE Class 12 physics course, and the board exam covers topics from both parts.
How many chapters are in NCERT Class 12 Physics Part I and Part II combined?
There are 14 chapters total: 8 in Part I and 6 in Part II. All 14 chapter PDFs are listed and verified on this page.
Why does the Current Electricity chapter PDF title say “Chapter Three”?
The file’s embedded title metadata reads “Chapter Three CURRENT ELECTRICITY,” which is how NCERT labeled it. This is not an error or a fake copy—it is simply the official title as stored in the PDF. The content is correct and complete. The file was verified on 2026-07-11 and is safe to use.
How many marks does the Electrostatics and Current Electricity unit carry in the CBSE Class 12 Physics exam?
Electrostatics and Current Electricity (Part I Chapters 1–3) is worth 16 marks out of the 70 theory marks in the board exam.
Do CBSE Class 12 students need both Physics Part I and Part II for the board exam?
Yes. The board exam covers all 14 chapters across both parts. Skipping either part will leave major topics uncovered—Part II contains 37 of the 70 theory marks (optics, modern physics, and electronics).
How can I confirm the NCERT Physics PDF I download is the current edition?
Check the download link directly from the official NCERT website at ncert.nic.in/textbook.php. Avoid third-party file hosts. All 14 chapter PDFs on this page were last verified on 2026-07-11 and are linked directly from the official NCERT portal.
Reference: NCERT Class 12 Physics Part I and Part II textbooks, official edition on ncert.nic.in. Unit-wise marks distribution verified against CBSE Academic Curriculum 2026-27 on cbseacademic.nic.in.