Download the NCERT Exemplar Class 12 Physics below, free and unmodified from the official 2026-27 NCERT Exemplar print on Nuclei. The NCERT Exemplar Class 12 Physics drills both objective and long-answer reasoning, useful for CBSE Boards and entrance exams in one go. Treat the NCERT Exemplar Class 12 Physics as your next rung after the main textbook.
- CBSE Weightage: 3 to 4 marks (Class 12 Physics Boards)
- JEE Main Weightage: 2 to 3% (typically 1 to 2 questions per shift drawn from this chapter)
- NEET Weightage: 2 to 3 question(s) per year
How will the NCERT Exemplar Class 12 Physics on Collegedunia Help You?
This page hosts the official 2026-27 print and adds the practice-strategy layer that a raw Exemplar PDF lacks.
- 2026-27 NCERT Alignment: Every problem in the 26-question set is mapped to a sub-topic that still belongs to the current Class 12 Physics syllabus, so you do not waste time on dropped content.
- Question-Type Inventory: A clear count of MCQ-I, MCQ-II, VSA, SA, and LA problems lets you pace each sitting against the actual size of the load.
- Self-Test Format: The book prints only the problems, so you can attempt cold, mark your weak ones, and return to them in the final revision week.
- JEE and NEET Crossover: Recent JEE Main and NEET sittings have reused Exemplar setups almost verbatim. Working this NCERT Exemplar Class 12 Physics is the cheapest way to lift your entrance-exam Physics score for Nuclei.
Nuclei NCERT Exemplar Video Lecture - Class 12 Physics Chapter 13
Source: JEE Wallah on YouTube
What's Inside the NCERT Exemplar Class 12 Physics
The Exemplar runs about 6 pages and packs the problems into five fixed sections. The topic map below tells you where each sub-topic is concentrated, so you can target your weakest area without scanning the whole chapter.
| Sub-Topic Concentration | Problem Numbers |
|---|---|
| Composition and size of the nucleus | 13.1, 13.5, 13.11, 13.16 |
| Mass defect and binding energy per nucleon | 13.2, 13.6, 13.7, 13.12, 13.17, 13.22, 13.25 |
| Radioactivity, half-life and mean life | 13.3, 13.8, 13.13, 13.18, 13.23, 13.26 |
| Alpha, beta, gamma decay and energetics | 13.4, 13.9, 13.14, 13.19 |
| Nuclear fission and fusion | 13.10, 13.15, 13.20, 13.21, 13.24 |
Nuclei NCERT Exemplar Question-Type Breakdown
The 2026-27 Exemplar print divides Chapter 13 into five question types. The split below tells you how many of each kind you face and the indicative mark value used in the Exemplar's own marking scheme.
| Question Type | Number of Problems | Indicative Marks Each |
|---|---|---|
| MCQ-I (single correct) | 7 | 1 |
| MCQ-II (one or more correct) | 3 | 2 |
| Very Short Answer (VSA) | 5 | 1 to 2 |
| Short Answer (SA) | 5 | 3 |
| Long Answer (LA) | 6 | 5 |
| Total | 26 | - |
MCQ-II is the most-failed type because at least one option besides the obvious one is correct; treat it as a slow type, not a quick one.
2026-27 Syllabus Status of Nuclei Exemplar Problems
Detailed kept-trimmed-removed table: see the breakdown on the Nuclei Class 12 Physics NCERT Book PDF page.
Why the NCERT Exemplar Matters for JEE Main and NEET Nuclei Prep
The NCERT Exemplar is the official NCERT publication that paper-setters reference when they design HOTS problems for both the CBSE Board and the JEE Main / NEET papers. Three reasons it deserves a slot in your study plan:
- Same author body: The committees that write NCERT textbook and NCERT Exemplar overlap. Practising the Exemplar trains you on the exact phrasing CBSE markers expect.
- Five question types: Few other resources cover MCQ-I, MCQ-II, VSA, SA, and LA in one book. The mix matches today's CBSE paper structure and the JEE Main MCQ-II / multiple-correct trap-style.
- Free and offline: The PDF works on a phone with no reader app. Print only the section you need (the LA pages, for instance) without buying a private question bank.
Boards toppers consistently cite the Exemplar as the single book that lifted their score from a B1 to an A1 in Physics.
Time-per-Question Budget for the Nuclei Exemplar
A realistic time map helps you plan how many sittings the chapter PDF needs. Numbers below are the average attempt time for a Class 12 student who has already finished the corresponding NCERT chapter.
| Question Type | Problems | Avg. Minutes Each | Total Time |
|---|---|---|---|
| MCQ-I and MCQ-II | 10 | 3 to 5 | ~40 min |
| VSA and SA | 10 | 5 to 8 | ~60 min |
| LA | 6 | 20 to 25 | ~132 min |
| Whole chapter | 26 | - | ~3.9 hours |
Spread the 3.9-hour load across four to five sittings; back-to-back attempts of LA problems are the fastest way to fatigue and to skip working out the maths in full.
Topper Strategy for the Nuclei Exemplar
Three habits that toppers use for the Nuclei Exemplar:
- Two passes, not one: Solve every Exemplar problem in the first pass. In the second pass, attempt only the starred (wrong-first-time) problems. The second pass is where score actually moves.
- Write LA answers in board format: Diagram, given / to-find, formula statement, substitution, final answer in a box. The Exemplar's LA problems are tuned for exactly this layout, so practising it on the Exemplar earns easy 5-mark wins on the board paper.
- Compare your answer with the official Exemplar Solutions: Do not invent your own marking scheme. The Exemplar Solutions resource carries the official step-by-step credit map for each problem.
Nuclei Top Formulae to Memorise Before Attempting the Exemplar
Most Exemplar problems hinge on a small set of recurring formulas. Lock these four into memory before opening the NCERT Exemplar Class 12 Physics; you will save 30 to 40% of attempt time per problem.
| Concept | Formula |
|---|---|
| Mass defect and binding energy | B.E. = (Delta m) c squared |
| Radioactive decay law | N = N_0 e^(-lambda t) |
| Half-life and decay constant | T_(1/2) = ln 2 / lambda |
| Energy released per fission | ~200 MeV (for U-235) |
Full master table: Nuclei Class 12 Physics Formula Sheet
Nuclei CBSE Marks Weightage Compared Across Class 12 Physics Chapters
Typical CBSE Class 12 Physics marks split across all chapters (averaged over 5 board papers):
Other Resources for Nuclei Class 12 Physics Chapter 13
| Resource | Link |
|---|---|
| NCERT Solutions | Nuclei Class 12 Physics NCERT Solutions |
| Notes | Nuclei Class 12 Physics Notes |
| Formula Sheet | Nuclei Class 12 Physics Formula Sheet |
| NCERT Book PDF | Nuclei Class 12 Physics NCERT Book PDF |
| Exemplar Book PDF | Nuclei Class 12 Physics NCERT Exemplar Book PDF |
| Exemplar Solutions | Nuclei Class 12 Physics NCERT Exemplar Solutions |
| Handwritten Notes | Nuclei Class 12 Physics Handwritten Notes |
Student Feedback
"I was stuck on radioactive decay problems until I used the Nuclei Exemplar from this page. The question-type breakdown helped me plan my sitting time." - Class 12 student, Delhi
"The sub-topic map on this page told me exactly which problems to do first. Finished the LA section in two sittings." - NEET aspirant, Maharashtra
NCERT Exemplar Book PDF for Class 12 Physics: All Chapters
Other Class 12 Physics NCERT Exemplar Book PDFs you can grab as free downloads:
| Chapter | Resource |
|---|---|
| Chapter 1 | Electric Charges and Fields Exemplar Book PDF |
| Chapter 2 | Electrostatic Potential and Capacitance Exemplar Book PDF |
| Chapter 3 | Current Electricity Exemplar Book PDF |
| Chapter 4 | Moving Charges and Magnetism Exemplar Book PDF |
| Chapter 5 | Magnetism and Matter Exemplar Book PDF |
| Chapter 6 | Electromagnetic Induction Exemplar Book PDF |
| Chapter 7 | Alternating Current Exemplar Book PDF |
| Chapter 8 | Electromagnetic Waves Exemplar Book PDF |
| Chapter 9 | Ray Optics and Optical Instruments Exemplar Book PDF |
| Chapter 10 | Wave Optics Exemplar Book PDF |
| Chapter 11 | Dual Nature of Radiation and Matter Exemplar Book PDF |
| Chapter 12 | Atoms Exemplar Book PDF |
| Chapter 13 | Nuclei Exemplar Book PDF |
| Chapter 14 | Semiconductor Electronics Exemplar Book PDF |
NCERT Exemplar Class 12 Physics: available above as a free PDF download, fully aligned to the 2026-27 NCERT release.
NCERT Exemplar Class 12 Physics - Frequently Asked Questions
Ques. Where can I download the NCERT Exemplar Class 12 Physics for free?
Ans. You can download the NCERT Exemplar Class 12 Physics directly from this page. Both the Normal and HD versions are available, and both are free.
Ques. Is the Exemplar Book PDF aligned with the 2026-27 NCERT?
Ans. The NCERT Exemplar publication was not rationalised when the NCERT Exemplar Class 12 Physics was trimmed. The bulk of Chapter 13 problems still map to the current 2026-27 textbook chapter; a small minority touch sub-topics that were removed and can be skipped during board preparation.
Ques. How many pages is the Class 12th Physics Chapter 13 Exemplar Book PDF?
Ans. The NCERT Exemplar Class 12 Physics Exemplar PDF runs approximately 6 pages and packs 26 HOTS problems across MCQ-I, MCQ-II, VSA, SA, and LA types.
Ques. Are Exemplar problems compulsory for the CBSE Class 12 board exam?
Ans. Exemplar problems are not in the prescribed NCERT textbook, but CBSE has used Exemplar-style HOTS items in 4 of the last 5 board papers. For an A1 grade in Physics, working the Exemplar is practically required.
Ques. Where can I find the solutions to the Nuclei Exemplar problems?
Ans. Step-by-step answers for every problem in this chapter are on the Nuclei Class 12 Physics NCERT Exemplar Solutions page.
Ques. Can I use the Exemplar Book for JEE Main and NEET preparation?
Ans. Yes. JEE Main 2024 and 2025 each carried at least one question whose setup mirrored an Exemplar problem from Chapter 13. NEET also reuses Exemplar MCQ-II patterns. Use this PDF during your year, then revisit it before the entrance exam.
Comments