NCERT Class 9 Physics book PDF- Free PDF Download - eSaral

What Is the NCERT Class 9 Physics Book?

NCERT does not publish a standalone Class 9 Physics book. Physics, Chemistry and Biology are combined in one Science textbook, Exploration, which has 13 chapters in the 2026-27 edition. The NCERT Class 9 Physics book PDF is the set of four Physics chapters from that book.

These chapters cover motion, forces and Newton's laws, work and energy, and sound. To download the full textbook, see the NCERT Class 9 Science book PDF. The other subject portions are on the Class 9 Chemistry NCERT book and Class 9 Biology NCERT book pages.

NCERT Class 9 Physics Book PDF – Chapter-wise Download (2026-27)

The NCERT Class 9 Physics book PDF has 4 chapters. Click Download PDF to open any chapter. No login is needed.

Why are the chapters numbered 4, 6, 7 and 10? Chapter numbers in the NCERT Class 9 Physics book PDF follow the full Exploration textbook, where Physics chapters sit between Chemistry and Biology chapters.

Class 9 Physics Syllabus: Old vs New Chapters

The 2026-27 NCERT Class 9 Physics book PDF has 4 chapters instead of the earlier 5.

If your guidebook still lists the old Class 9 Physics chapters, such as Gravitation, it follows the old syllabus. Check the latest CBSE Class 9 syllabus for marks distribution.

What Each Chapter of the NCERT Class 9 Physics Book PDF Covers

Chapter 4 — Describing Motion Around Us

This chapter explains how to describe motion using position, distance and displacement, speed and velocity, and acceleration. Students learn to read position-time and velocity-time graphs, derive the three equations of motion for constant acceleration, and understand why uniform circular motion is accelerated even at constant speed.

Key concepts and formulae: Distance vs displacement, speed vs velocity, acceleration, position-time and velocity-time graphs, v = u + at, s = ut + ½at², v² = u² + 2as, uniform circular motion.

Motion returns in Class 11 as kinematics — continue later with eSaral's motion in a straight line notes.

Chapter 6 — How Forces Affect Motion

This chapter explains what a force is, how balanced and unbalanced forces affect motion, and the role of friction. It covers Newton's three laws of motion, momentum, the relation between force and rate of change of momentum, and weight (W = mg).

Key concepts and formulae: Balanced and unbalanced forces, friction, inertia, Newton's first, second and third laws, F = ma, momentum p = mv, weight W = mg.

This is the base for Laws of Motion in Class 11.

Chapter 7 — Work, Energy, and Simple Machines

This chapter defines work in science, links it to energy through the work-energy theorem, and covers kinetic and potential energy. Students learn the conservation of mechanical energy, power, and how simple machines such as levers, pulleys and inclined planes reduce effort without reducing total work.

Key concepts and formulae: W = F × s, kinetic energy ½mv², potential energy mgh, conservation of mechanical energy, power P = W/t, mechanical advantage = load ÷ effort.

Take it further with Work, Energy and Power Class 11 notes.

Chapter 10 — Sound Waves: Characteristics and Applications

This chapter explains sound as a longitudinal wave that needs a medium, travelling as compressions and rarefactions. It covers wavelength, frequency, time period and amplitude, the relation v = λν, how pitch and loudness depend on frequency and amplitude, the speed of sound in different media, echo and reverberation, and uses of ultrasound such as SONAR and medical imaging.

Key concepts and formulae: Longitudinal waves, compression and rarefaction, wavelength, frequency, T = 1/ν, v = λν, pitch, loudness, audible range (20 Hz–20 kHz), echo, reverberation, ultrasound, SONAR.

Waves are studied in depth in Class 11 — see Waves Class 11 notes.

How to Download the NCERT Class 9 Physics Book PDF

1. Go to the chapter-wise table above.
2. Click Download PDF next to the chapter you need. It opens in your browser.
3. Use the browser's download button to save it for offline study.

You can also get the NCERT Class 9 Physics book PDF from the official NCERT textbooks portal by choosing Class IX, then Science. Hindi-medium students can use the NCERT Class 9 Physics book in Hindi.

How to Study Class 9 Physics from the NCERT Book

• Read each chapter of the NCERT Class 9 Physics book PDF once without stopping, then go back to the worked examples.
• Keep a one-page formula sheet for the four chapters, with SI units.
• Solve every in-text example yourself before looking at the solution.
• Practise graphs and diagrams. Velocity-time graphs (Ch 4), force diagrams (Ch 6) and wave diagrams (Ch 10) are common exam questions.
• Check your answers with NCERT Solutions for Class 9 Science, then test yourself with the eSaral Class 9 and 10 test series.

💡 Expert Tip by eSaral Physics Faculty Reading alone will not earn marks in Physics; numerical practice will. After each chapter of the NCERT Class 9 Physics book PDF, solve the exercise numericals without help and always write the formula, substitution and unit. Most lost marks come from missing units or skipped steps.

Why Use the NCERT Book for Class 9 Physics?

• It is the CBSE-prescribed textbook, so school exams are set from it.
• Concepts are built from everyday examples before formulae are introduced.
• Worked examples and exercises train step-by-step numerical solving.
• It builds the base for Class 11 Physics, especially kinematics, laws of motion, work-energy and waves, which matter for JEE and NEET later.

How Does Class 9 Physics Connect to JEE Main Preparation?

Every single chapter in Class 9 Physics feeds directly into the JEE Main and JEE Advanced syllabus. This is not a coincidence — the NCERT progression is deliberately designed this way.

Students who master these 5 chapters in Class 9 enter Class 11 with a significant advantage. The equations of motion, Newton's laws, and energy conservation laws introduced in Class 9 NCERT are the same ones used to solve JEE Advanced problems — just at a higher level of complexity.

To watch free learning videos on Class 9 Physics topics by Kota's top IITian Faculties, install the eSaral App.

How to Study NCERT Class 9 Physics Effectively?

Physics requires a different approach than Biology or Chemistry. Concepts must be understood, not memorised. Here is a chapter-by-chapter study strategy:

So, that's all from this article. I hope you found this helpful. If you did, please share it with other students. Also Read:

• Class 9 Science NCERT Solutions
• NCERT Class 9 Solutions for Math
• NCERT Math Class 9 Exemplar
• NCERT Science Class 9 Exemplar
• Download NCERT Book for Class 9

If you have any confusion related to the NCERT Class 9 Physics book PDF, feel free to ask in the comments section below. To watch Free Learning Videos on Physics by Kota's top IITian Faculties, install the eSaral App.