Download the NCERT Exemplar Class 12 Physics Chapter 11 - Dual Nature of Radiation and Matter PDF free from this page. Several problems from this chapter appear near-verbatim in JEE Main and NEET papers. This page hosts the 2026-27 official Exemplar PDF with a topic map, question-type breakdown, and study tips.
- CBSE Weightage: 3 to 5 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 questions 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 29-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 Dual Nature of Radiation and Matter.
Dual Nature of Radiation and Matter Video Lecture - Class 12 Physics Chapter 11
Source: JEE Physics By Vedantu on YouTube
What's Inside the NCERT Exemplar Class 12 Physics
The Exemplar runs about 7 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 |
|---|---|
| Electron emission and work function | 11.1, 11.6, 11.14, 11.19 |
| Photoelectric effect and Einstein equation | 11.2, 11.3, 11.7, 11.8, 11.15, 11.20, 11.25 |
| Photon energy, momentum, intensity link | 11.4, 11.9, 11.10, 11.21, 11.26 |
| de Broglie wavelength of matter waves | 11.5, 11.11, 11.12, 11.16, 11.22, 11.27, 11.28 |
| Davisson-Germer experiment | 11.13, 11.17, 11.18, 11.23, 11.24, 11.29 |
Dual Nature of Radiation and Matter NCERT Exemplar Question-Type Breakdown
The 2026-27 Exemplar print divides Chapter 11 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) | 8 | 1 |
| MCQ-II (one or more correct) | 5 | 2 |
| Very Short Answer (VSA) | 5 | 1 to 2 |
| Short Answer (SA) | 6 | 3 |
| Long Answer (LA) | 5 | 5 |
| Total | 29 | - |
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 Dual Nature of Radiation and Matter Exemplar Problems
The NCERT Exemplar publication was not rationalised when the NCERT Exemplar Class 12 Physics was trimmed in 2023. Some Exemplar problems still touch sub-topics that are no longer part of the current Class 12 Physics chapter. Skip those during board preparation; keep them only if you are working the book for JEE Main or NEET, where the entire scope still matters.
Detailed kept-trimmed-removed table: see the breakdown on the Dual Nature of Radiation and Matter Class 12 Physics NCERT Book PDF page.
Why the NCERT Exemplar Matters for JEE Main and NEET - Dual Nature of Radiation and Matter
Three reasons to include this Exemplar in your Class 12 Physics study plan:
- Same author body: The committees that write the NCERT textbook and Exemplar overlap. Practising it trains you on the exact phrasing CBSE markers expect.
- Five question types: MCQ-I, MCQ-II, VSA, SA, and LA in one book matches the CBSE paper structure and the JEE Main multiple-correct trap-style.
- Free and offline: The PDF works on any phone. Print only the section you need, without buying a private question bank.
Topper Strategy for Dual Nature of Radiation and Matter Exemplar - Class 12
- 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.
Dual Nature of Radiation and Matter Exemplar vs NCERT Textbook: Difficulty Step-Up
The Exemplar takes the same physics setup as the NCERT textbook chapter but adds one or two complicating layers. The contrast below shows what changes between the two books.
| Aspect | NCERT Textbook | NCERT Exemplar |
|---|---|---|
| Purpose | Concept building and solved examples | HOTS practice with multi-step problems |
| Difficulty band | Easy to medium | Medium to very hard (especially LA) |
| Solved examples in chapter | Around 6 to 14 solved examples | Zero step-by-step solutions in the book |
| Total practice problems | Roughly 9 end-of-chapter Exercises | 29 problems across 5 types |
| Match rate with JEE / NEET | Low to medium | High (around 25 to 30% reused) |
Dual Nature of Radiation and Matter Key Formulae for Class 12 Physics Chapter 11 Exemplar
Lock these four formulas in memory before you open the Exemplar. They cover most of the 29 problems in Chapter 11.
| Concept | Formula |
|---|---|
| Einstein's photoelectric equation | KE_max = h nu - phi_0 |
| Threshold frequency | phi_0 = h nu_0 |
| de Broglie wavelength | lambda = h / p |
| Wavelength of accelerated electron | lambda(nm) = 1.227 / sqrt(V) |
Full master table: Dual Nature of Radiation and Matter Class 12 Physics Formula Sheet
Dual Nature of Radiation and Matter CBSE Marks Weightage - Class 12 Physics Chapter 11
Chapter 11 carries about 4 marks in the CBSE Class 12 Physics board paper. The bar chart below shows how all 14 chapters compare.
Student Feedback
"The topic map in this article helped me find exactly which Exemplar problems cover the photoelectric effect before my NEET revision. Very useful page." - Class 12 student, Delhi
"I had no idea the Exemplar had MCQ-II type questions. The question-type table cleared that up right away." - JEE aspirant, Maharashtra
Other Resources for Dual Nature of Radiation and Matter - Class 12 Physics Chapter 11
| Resource | Link |
|---|---|
| NCERT Solutions | Dual Nature of Radiation and Matter NCERT Solutions |
| Notes | Dual Nature of Radiation and Matter Notes |
| Formula Sheet | Dual Nature of Radiation and Matter Formula Sheet |
| NCERT Book PDF | Dual Nature of Radiation and Matter NCERT Book PDF |
| Exemplar Book PDF | Dual Nature of Radiation and Matter Exemplar Book PDF |
| Exemplar Solutions | Dual Nature of Radiation and Matter Exemplar Solutions |
| Handwritten Notes | Dual Nature of Radiation and Matter Handwritten Notes |
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 textbook was trimmed. The bulk of Chapter 11 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 11 Exemplar Book PDF?
Ans. The NCERT Exemplar Class 12 Physics Exemplar PDF runs approximately 7 pages and packs 29 HOTS problems across MCQ-I, MCQ-II, VSA, SA, and LA types.
Ques. Is this NCERT Exemplar Class 12 Physics aligned with the 2026-27 CBSE syllabus?
Ans. Chapter 11 of the Class 12 Physics Exemplar holds 29 problems in total, split as MCQ-I (8), MCQ-II (5), VSA (5), SA (6), and LA (5).
Ques. Are Exemplar problems compulsory for the CBSE Class 12 board exam?
Ans. Exemplar problems are not part of the prescribed NCERT textbook chapter, 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 Dual Nature of Radiation and Matter Exemplar problems?
Ans. Solved answers for every problem in this chapter are on the Dual Nature of Radiation and Matter Class 12 Physics NCERT Exemplar Solutions page.
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