ICSE Class 10 Physics (Science Paper 1, code 521) is the first of three Science papers in the Indian Certificate of Secondary Education examination conducted by the Council for the Indian School Certificate Examinations (CISCE). The paper carries 80 marks for the theory component and a further 20 marks for internal assessment (practical work + project), making a total of 100 marks. The prescribed textbook is the Selina Concise Physics for ICSE Class 10, organised across 12 chapters that move from classical mechanics through optics, electricity, modern physics, and heat.
This page is the official icseboard.org Class 10 Physics hub. Below you will find chapter-wise textbook PDFs, year-tagged past papers, pre-board and specimen papers, the official marking scheme, key formulas you must memorise, and a study plan tested with classroom students. Every download link points to a verified PDF hosted on icseboard.org — no third-party redirects.
How the ICSE Class 10 Physics Curriculum Is Structured
The 2026-27 syllabus follows the CISCE specification revised in 2023. It is split into six broad themes — Force, Work & Energy; Light; Sound; Electricity & Magnetism; Heat; and Modern Physics — distributed across 12 chapters in Selina Concise. The chapter ordering matters because each unit builds on the previous one: refraction at plane surfaces (Ch 4) is a prerequisite for refraction through a lens (Ch 5), and current electricity (Ch 8) underlies both household circuits (Ch 9) and electromagnetism (Ch 10). Skipping chapters out of sequence is a common mistake that costs students 8–12 marks on the integrated questions in Section B.
Chapter-wise Selina Concise Physics PDFs
The 12 chapters below cover the entire 2026-27 syllabus. Each PDF is the corresponding chapter of the prescribed Selina Concise Physics textbook, including worked examples, exercises, and end-of-chapter review questions. We have ordered them as they appear in CISCE’s official scheme of work.
Mechanics & Energy (Chapters 1–3)
The mechanics block introduces the rigorous vector treatment of force, energy, and machines. Chapter 1 — Force deals with moment of force, couples, and equilibrium; expect a numerical on calculating the moment about a pivot for almost every paper since 2018. Chapter 2 — Work, Energy and Power develops the work-energy theorem and the standard kinetic and potential energy expressions. The two formulas you must derive cleanly are:
W = F \cdot s \cdot \cos\theta \qquad \text{and} \qquad P = \frac{W}{t} = F \cdot v
Chapter 3 — Machines applies these concepts to levers, pulleys, and inclined planes. The mechanical advantage, velocity ratio, and efficiency triangle:
\eta = \frac{\text{M.A.}}{\text{V.R.}} \times 100\%
is examined every year, usually as a 3-mark numerical with a single-string pulley system.
Light — Optics (Chapters 4–6)
Optics carries the second-highest weightage in the paper after electricity. Begin with Chapter 4 — Refraction of Light at Plane Surfaces, which covers Snell’s law and critical angle phenomena (total internal reflection in prisms, optical fibres). Chapter 5 — Refraction Through a Lens is the most frequently examined chapter in the entire paper. Master the lens formula and magnification:
\frac{1}{v} – \frac{1}{u} = \frac{1}{f} \qquad m = \frac{v}{u} = \frac{h_i}{h_o}
and practise ray diagrams for at least the six standard object positions. Chapter 6 — Spectrum closes the optics unit with dispersion through a prism, the electromagnetic spectrum, and applications such as IR thermography and UV sterilisation — a section examined as a 5-mark short-answer question.
Sound (Chapter 7)
Chapter 7 — Sound is the shortest unit in the paper but contributes a reliable 7–9 marks. Topics include resonance (with the resonance-tube experiment for finding the speed of sound), vibrations of strings and air columns, and the basics of forced and free oscillation. The speed of sound in a stretched string is:
v = \sqrt{\frac{T}{\mu}}
where T is the tension and μ the linear mass density — appearing periodically as a derivation request.
Electricity & Magnetism (Chapters 8–10)
Electricity is the highest-weightage section — typically 18–22 marks across three chapters. Chapter 8 — Current Electricity covers Ohm’s law, resistance combinations, and the EMF/terminal-voltage distinction. Expect a numerical on solving a mixed series-parallel circuit. Chapter 9 — Household Circuits applies the same theory to live/neutral/earth wiring, fuse-vs-MCB protection, and the kilowatt-hour energy calculation:
E\,(\text{kWh}) = P\,(\text{kW}) \times t\,(\text{hours})
Chapter 10 — Electromagnetism introduces the magnetic effect of current, Fleming’s left- and right-hand rules, simple DC motor construction, and electromagnetic induction — the foundation for Class 12 work on transformers and AC generation.
Heat & Modern Physics (Chapters 11–12)
Chapter 11 — Calorimetry handles specific heat capacity, latent heat of fusion and vaporisation, and the principle of method of mixtures. The unifying equation is:
Q = m \cdot c \cdot \Delta T \qquad \text{and} \qquad Q = m \cdot L
Chapter 12 — Radioactivity closes the syllabus with the structure of the atom, isotopes, α/β/γ radiation properties, nuclear equations, and the biological hazards of radiation. It is a high-scoring chapter (almost entirely descriptive) and is the easiest 6–8 marks in the entire paper if you memorise the radiation comparison table.
ICSE Class 10 Physics Marking Scheme & Paper Pattern
The Physics theory paper runs for two hours with an additional 15-minute reading time before the paper officially starts. The 80-mark structure is fixed by CISCE:
| Section | Question type | Compulsory? | Marks |
|---|---|---|---|
| A | Short answer — 10 questions of 2 marks each (sub-parts) | All compulsory | 40 |
| B | Long answer — 4 of 6 questions, 10 marks each | Internal choice (answer any 4) | 40 |
| Internal Assessment | Practical work + project | School-assessed, year-round | 20 |
| Total | 100 | ||
Section A questions reward precision over length — most carry 2 marks for either a one-line definition plus a labelled diagram or a 2–3 line numerical. Section B rewards depth: every 10-mark question has three sub-parts (typically 3+3+4 marks), and partial credit is generously awarded if your method is correct even when the final answer is wrong. Time management tip: spend no more than 50 minutes on Section A so that you have 70 minutes for Section B and 15 minutes for review.
Past Papers & Pre-board Practice Strategy
Practice papers are most effective when used in this order: recent specimen → recent pre-board → past 3 years of board papers → older archives. The reason: CISCE updates its question style every 3–4 years, so older papers can drill outdated formats. Below we have curated only the papers worth solving in the lead-up to your 2027 board.
Start with the official specimen paper
CISCE releases an official specimen paper at the start of each session showing the exact pattern, weightage, and question types you will face. Solve this first — before any other practice paper. Download the latest available specimen: ICSE Class 10 Physics Specimen Paper (Code 521). Treat it as a diagnostic — no time limit, open book — to identify which chapters you are weakest in.
Pre-board papers — the most predictive practice
Pre-board papers (also called preliminary papers) are set by experienced ICSE schools in the months before the actual board exam and consistently track CISCE’s evolving question style more closely than older board papers. Use these under strict timed conditions:
- Pre-Board Physics Paper — January 2026 (latest)
- Pre-Board Physics Paper — December 2025
- Pre-Board Physics Paper — 2025 session
- Pre-Board Physics Paper — 2023 session
Solved board papers — 2017 to 2026
The board papers below span ten exam sessions. We recommend solving at least the last three (2024, 2025, 2026 partials) under 2-hour timed conditions, and reading through the older ones for question variety. The most recent papers are:
- ICSE Class 10 Physics Board Paper — 2026
- ICSE Class 10 Physics Board Paper — 2025
- ICSE Class 10 Physics Board Paper — 2024
- ICSE Class 10 Physics Board Paper — 2023
- ICSE Class 10 Physics Board Paper — 2020
Term tests & assessments — between-chapter practice
For mid-syllabus checkpoints, the school-set first-term and second-term papers are the right level of difficulty. Use these during learning, not at the end:
- First-Term Physics Test — 2026 (covers Ch 1–6)
- Second-Term / Half-Yearly Physics Test — 2026 (covers Ch 7–12)
- Unit Test 1 Physics — 2025 (single-chapter practice)
Three-Month Study Plan for ICSE Class 10 Physics
This plan assumes you start three months before the board exam (typically December for a February/March exam). It is based on the chapter weightage distribution we have observed across the last five years of board papers.
| Weeks | Focus | Output target |
|---|---|---|
| 1–3 | Mechanics + Optics (Ch 1–6) — first pass through Selina + 10 numericals per chapter | One handwritten formula sheet per chapter |
| 4–6 | Sound + Electricity + Magnetism (Ch 7–10) — focus on circuit numericals | 20 mixed Section-A questions per week, timed at 5 min each |
| 7–8 | Heat + Modern Physics (Ch 11–12) — descriptive answers + radiation table | Complete 1 full specimen paper under 2-hour timed conditions |
| 9–10 | Pre-board papers (2024, 2025, 2026) — full timed practice with self-marking | Identify and revise your 3 weakest chapters |
| 11–12 | Past board papers (2020–2024) + revision of weak chapters + ray-diagram practice | Average 65+/80 on the last three papers attempted |
Common Mistakes Class 10 ICSE Students Make in Physics
From correcting over a decade of ICSE answer scripts, our editorial panel sees the same six errors costing students between 10 and 15 marks every year:
- Wrong sign convention in lens numericals — the New Cartesian sign convention is mandatory; distances measured against the direction of incident light are negative. Many candidates use the older “real-is-positive” convention from coaching notes, losing the final 1 mark on every optics question.
- Missing units in numerical answers — CISCE explicitly deducts ½ mark for any answer without units. With 6–8 numericals per paper, this alone costs 3–4 marks.
- Skipping the ray diagram in Section A — when a 2-mark optics question asks for image formation, a labelled ray diagram is worth 1 mark on its own. Writing only a sentence loses half the available marks.
- Confusing efficiency and mechanical advantage — efficiency is a ratio of useful to total energy; M.A. is a ratio of loads. Many students substitute one for the other in Machines numericals.
- Forgetting the kWh-to-Joule conversion — household-circuit numericals routinely require E in joules for cost calculations: 1 \text{ kWh} = 3.6 \times 10^6 \text{ J}.
- Memorising radiation properties without the comparison table — examiners expect a side-by-side α/β/γ comparison; loose paragraphs score lower than structured 3-column tables for the same content.
Related ICSE Resources
For chapter-by-chapter solved answers — including step-by-step working for every Selina exercise question — see our complete ICSE Class 10 Physics Selina Concise Solutions. For the rest of the science stream and the broader Class 10 curriculum, you may also find these useful: Class 10 Chemistry Solutions, Class 10 Biology Solutions, the complete ICSE Class 10 syllabus 2026-27, and the Class 10 previous year question papers across all subjects.
Frequently Asked Questions
Which textbook is officially prescribed for ICSE Class 10 Physics 2026-27?
The Council for the Indian School Certificate Examinations (CISCE) prescribes Selina Concise Physics for ICSE Class 10 as the primary textbook for the 2026-27 academic session. The 12-chapter version aligns exactly with the CISCE syllabus released in 2023 and used for board examinations from 2024 onward. Some schools additionally recommend ICSE Concise Physics by S. Chand or Nootan Physics ICSE Class 10 as supplementary reading, but Selina remains the official reference.
Is ICSE Class 10 Physics tougher than CBSE Class 10 Physics?
ICSE Physics is broadly considered more rigorous than its CBSE counterpart because (a) it is taught as a dedicated 80+20 paper rather than as one section of an integrated Science paper, and (b) the syllabus includes derivations and applications — such as the lens equation derivation and household-wiring single-line diagrams — that CBSE typically defers to Class 11. The increased depth tends to make Class 11 Physics noticeably easier for ICSE students who later enter CBSE-affiliated junior colleges.
How many marks is the ICSE Class 10 Physics board exam out of?
The paper is worth 100 marks in total: 80 marks for the written theory paper (Section A 40 + Section B 40) and 20 marks for the internal assessment (practical work and project, marked by your school across the year). The minimum pass mark is 33% under the current CISCE policy.
Does the ICSE Class 10 Physics syllabus include practical work?
Yes. Internal assessment carries 20 marks and is school-assessed across the academic year. The CISCE syllabus mandates at least eight prescribed experiments — including verification of Ohm’s law, finding the focal length of a converging lens, determining the specific heat capacity of a metal, and the resonance-tube experiment for the speed of sound. Your project (worth 10 of the 20 IA marks) is an independent investigation on a Physics topic of your choice, approved by your subject teacher.
Where can I download free ICSE Class 10 Physics question papers for past years?
This page hosts verified ICSE Class 10 Physics board papers from 2017 through 2026, plus pre-board, specimen, and unit-test papers. All PDFs are free to download directly from icseboard.org and are organised in the past papers section above. Each file is the original CISCE-released paper without modification.
Will ICSE Class 10 Physics help me prepare for JEE or NEET?
The ICSE Class 10 Physics syllabus builds an unusually strong conceptual foundation for the Class 11 and 12 Physics that JEE and NEET test. In particular, the rigorous treatment of optics (lens formula, dispersion, electromagnetic spectrum), current electricity (Ohm’s law with sign-aware EMF analysis), and modern physics (atomic structure, radiation) means most of the qualitative groundwork is already in place. Students typically need only to extend their algebraic and calculus-based problem-solving in Class 11 to bridge to JEE/NEET-level mechanics.
How much time should I spend on the Physics practical component during the year?
The CISCE recommendation is one 80-minute practical session per week throughout Classes 9 and 10. Approach each experiment in two passes: first follow the procedure exactly as printed in your school manual to record clean observations; on the second pass, complete the error-analysis sub-questions and the precaution list that the IA evaluator looks for. The 10-mark project is best started in the first term — leaving it to the second term is the single most common reason students lose IA marks.