The NCERT Exemplar Class 12 Physics on this page is the supplementary Exemplar booklet for Class 12 Physics Chapter 14 Semiconductor Electronics. Get the NCERT Exemplar Class 12 Physics as a free download and pair it with the step-by-step solution PDF linked further down. The NCERT Exemplar Class 12 Physics is the same publication CBSE and JEE coaching centres prescribe.
- CBSE Weightage: 5 to 7 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
Both downloads of the NCERT Exemplar Class 12 Physics on this page are free and updated for the 2026-27 NCERT syllabus.
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 40-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: JEE Main and NEET reuse Exemplar problems from this chapter. It is the fastest way to lift your Physics score for Semiconductor Electronics.
Semiconductor Electronics Class 12 Physics - Video Lecture
Source: JEE Wallah on YouTube
What's Inside the NCERT Exemplar Class 12 Physics
The Exemplar runs about 11 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 |
|---|---|
| Energy bands in conductors, semiconductors, insulators | 14.1, 14.7, 14.16, 14.24 |
| Intrinsic and extrinsic semiconductors | 14.2, 14.8, 14.17, 14.25 |
| p-n junction formation and characteristics | 14.3, 14.9, 14.18, 14.26, 14.32 |
| Diode as rectifier (half-wave, full-wave) | 14.4, 14.10, 14.19, 14.27, 14.33 |
| Zener diode and special-purpose diodes (LED, photodiode, solar cell) | 14.5, 14.6, 14.11, 14.12, 14.13, 14.14, 14.15, 14.20, 14.21, 14.28, 14.29, 14.30, 14.31, 14.34, 14.35, 14.36, 14.37, 14.38, 14.39, 14.40 |
Semiconductor Electronics NCERT Exemplar Question-Type Breakdown
The 2026-27 Exemplar print divides Chapter 14 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) | 8 | 2 |
| Very Short Answer (VSA) | 7 | 1 to 2 |
| Short Answer (SA) | 7 | 3 |
| Long Answer (LA) | 10 | 5 |
| Total | 40 | - |
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 Semiconductor Electronics Exemplar Problems
Not all Exemplar problems match the 2026-27 NCERT chapter. A few sub-topics were removed in 2023. Skip those for boards; keep them for JEE Main or NEET preparation.
Detailed kept-trimmed-removed table: see the breakdown on the Semiconductor Electronics Class 12 Physics NCERT Book PDF page.
Why the NCERT Exemplar Matters for JEE Main and NEET Semiconductor Electronics Prep
Paper-setters reference the NCERT Exemplar when designing HOTS problems for CBSE Boards and JEE Main / NEET. Three reasons to add it to your 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.
Semiconductor Electronics Exemplar vs NCERT Textbook: Difficulty Step-Up
Both books cover the same physics, but the Exemplar adds harder layers. See the contrast below:
| 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 13 end-of-chapter Exercises | 40 problems across 5 types |
| Match rate with JEE / NEET | Low to medium | High (around 25 to 30% reused) |
If you can finish only one extra book outside the NCERT textbook for Semiconductor Electronics, make it the Exemplar.
JEE Main and NEET Semiconductor Electronics Questions Inspired by the Exemplar
Recent entrance papers reused the setup of several Exemplar problems from this chapter. The instances below come from the last two sittings of JEE Main and NEET.
Full year-wise PYQ map: Semiconductor Electronics Class 12 Physics NCERT Solutions
Semiconductor Electronics Top Formulae to Memorise Before Attempting the Exemplar
Most Exemplar problems use a small set of recurring formulas. Lock these four in before you start:
| Concept | Formula |
|---|---|
| Diode rectifier output frequency (full-wave) | f_out = 2 f_in |
| Zener regulator output voltage | V_out = V_Z (clamped) |
| Forward / reverse bias condition | V_F > 0, V_R < 0 |
| Intrinsic carrier concentration | n_i squared = n_e n_h |
Full master table: Semiconductor Electronics Class 12 Physics Formula Sheet
Semiconductor Electronics CBSE Marks Weightage Compared Across Class 12 Physics Chapters
The bar chart below shows CBSE Class 12 Physics marks split across all 14 chapters, averaged over five board papers.
Student Feedback
"The sub-topic map helped me find the diode rectifier questions in minutes instead of scanning all 11 pages." - Class 12 student, CBSE 2025
"I used this Exemplar PDF for every JEE Main mock. At least two questions per sitting came straight from Chapter 14." - JEE aspirant
"The question-type breakdown made it clear how long to spend on each section during revision week." - NEET aspirant
Other Resources for Semiconductor Electronics Class 12 Physics
| Resource | Link |
|---|---|
| NCERT Solutions | Semiconductor Electronics Class 12 Physics NCERT Solutions |
| Notes | Semiconductor Electronics Class 12 Physics Notes |
| Formula Sheet | Semiconductor Electronics Class 12 Physics Formula Sheet |
| NCERT Book PDF | Semiconductor Electronics Class 12 Physics NCERT Book PDF |
| Exemplar Solutions | Semiconductor Electronics Class 12 Physics NCERT Exemplar Solutions |
| Handwritten Notes | Semiconductor Electronics Class 12 Physics Handwritten Notes |
| Exemplar Book PDF | Semiconductor Electronics Class 12 Physics NCERT Exemplar Book PDF |
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 - 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 14 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 14 Exemplar Book PDF?
Ans. The NCERT Exemplar Class 12 Physics Exemplar PDF runs approximately 11 pages and packs 40 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 14 of the Class 12 Physics Exemplar holds 40 problems in total, split as MCQ-I (8), MCQ-II (8), VSA (7), SA (7), and LA (10).
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 Semiconductor Electronics Exemplar problems?
Ans. solved answers for every problem in this chapter are on the Semiconductor Electronics Class 12 Physics NCERT Exemplar Solutions page.
Ques. How long does it take to finish Chapter 14 of the Exemplar Book?
Ans. Plan for around 10 to 14 hours spread across four to five sittings: one hour for the MCQ types, two to three hours for VSA and SA, and the rest for the LA section. Always revisit any wrong attempts the same day to lock in the correction.
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 14. NEET also reuses Exemplar MCQ-II patterns. Use the NCERT Exemplar Class 12 Physics during your year, then revisit before the entrance.
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