CBSE Class 9 Physics Notes 2023-24

CBSE Class 9 Physics Notes 2023-24 is a comprehensive guide for CBSE class 9 Students. The Class 9 Syllabus is Designed to provide Students with a strong foundation in the basic principle of physics including Force, Law of Motion, Gravitation and Sound, and to encourage them to think scientifically. Our Class 9 Science Notes help Students study smartly and get a clear picture of each and every concept discussed in their syllabus. The notes also contain neatly illustrated examples for quick revision of important topics from NCERT, as well as some sample questions to aid better understanding.

GeeksforGeeks has created a new approach to school learning. Physics has been among the crucial subjects of the Class 9 Science Syllabus. It helps students in improving their understanding of fascinating concepts. The understanding of how motion, force, work, sound, gravity, energy, and power interact with one another and impact our lives. GeeksforGeeks prepared in-depth subject theory to have a solid foundation in Class 9 Physics. The below-listed articles are designed in such a way that you study everything according to your NCERT textbook, or reference books.

Students can also check CBSE Class 9 Physics Notes for Other Chapters and educate themselves on various subjects through the following resources:

CBSE Class 9 Physics Notes 2023-24 – Chapters List

CBSE Class 9 Physics Notes Chapter 1 – Motion

The first chapter in the Physics curriculum of Class 9 is Motion. Motion means movement. Motion is defined as the change in position of an object with respect to its surrounding in a given interval of time. This chapter forms the basic idea of kinematics for students to learn in further classes. Therefore, CBSE Class 9 Physics notes elaborate on distance and displacement, uniform and non-uniform motion, speed, velocity, and accelerated and decelerated motion. It also explains the equation of motion with a graphical representation of motion and uniform circular motion as listed below:

• Measuring the Rate of Motion
• Velocity – Time Graphs
• Equation of Motion by Graphical Method
• Uniform Circular Motion

CBSE Class 9 Physics Notes Chapter 2 –  Force and Laws of Motion

Force and Laws of Motion is the second chapter in the Class 9 Physics Syllabus. These notes explain the concept of force, its effects, balanced and unbalanced force, laws of motion, and Newton’s laws of motion. It further offers a detailed explanation of mass and inertia, momentum and mass, and its unit along with numerical problems for practice. The notes also explain the second law of motion and the third law of motion. Below are the listed articles on Force and Laws of Motion:

• Force – Definition, Effects, Types, Sample Problems
• Balanced and Unbalanced Forces
• Newton’s First Law of Motion
• Mass and Inertia
• Newton’s Second Law of Motion
• Newton’s Third Law of Motion
• Conservation of Momentum

CBSE Class 9 Physics Notes Chapter 3 – Gravitation

The third chapter of the Physics in Science syllabus of Class 9 is Gravitation. Gravitation is the universal force of attraction acting between all matter. GeeksforGeeks crucial notes explain Newton’s universal law of gravitation, mass, weight, and the difference between mass and weight. The notes further provide solved numerical problems, which are discussed in the articles listed below:

• Newton’s Universal Law of Gravitation
• Kepler’s Law of Planetary Motion
• Acceleration due to Gravity
• Factors affecting Acceleration due to Gravity
• Mass and Weight
• Free Fall – Definition, Examples, Formula, and Problems on it
• Buoyant Force and Causes of Buoyant Force
• Relative Density

CBSE Class 9 Physics Notes Chapter 4 – Work and Energy

Work and Energy is the fourth chapter in the Physics syllabus and so an important chapter to understand to solve mechanics in further classes. The notes talk about work, a condition when the work should be and when not, and its unit, along with positive, negative, and zero work. The notes also elaborate on energy, its types, the law of conservation energy, power, and a commercial unit of power and provide solved Numericals, discussed in the articles mentioned below:

• Work – Definition, Formula, Types of Work, Sample Problems
• What is Energy?
• Kinetic Energy
• Potential Energy
• Power
• Commercial Unit of Energy

CBSE Class 9 Physics Notes Chapter 5 –  Sound

The last chapter in the Class 9 Physics Syllabus is Sound. Sound is heard every day from various sources like humans, birds, bells, machines, TV, radios, etc. The notes elaborate production and propagation of sound, sound waves as longitudinal waves, their characteristics, wavelength, frequency, time period, amplitude, and velocity. Various other concepts of the speed of sound in multiple mediums, sonic boom, echo, a reflection of sound, range of hearing, application of ultrasound, sonar, and structure of the human ear are also explained in the article listed below:

• Production and Propagation of Sound
• Sound Needs a Medium for Propagation
• What are the Characteristics of Sound Waves?
• Speed of Sound
• Reflection of Sound
• Explain the Working and Application of SONAR
• Human Ear

Conclusion

CBSE Class 9 Physics Notes are an essential tool for Class 9th Students for their Exam preparation. With our CBSE Science Notes, Students can easily focus on physics and Important NCERT topics and retain knowledge effectively. The well-crafted notes, with neat examples, provide a complete overview of All chapters for quick revision. By using our CBSE class 9 science notes, students can achieve higher marks in exams and experience a smooth learning journey.

FAQs on CBSE Class 9 Physics Notes

Q1. How do I get a good score in science class 9?

Following are some tips and tricks that will help the students in achieving a good percentage in their Class 9 Science exam:

1. The first step toward getting good grades is to read and go through the syllabus.
2. The most important thing to remember when studying for tests is to rely on self-study. Study by yourself and seek help from teachers if you have any doubts.
3. Students must study from NCERT and reference books, which will help them understand various concepts and chapters.
4. You cannot study for more than 4 – 5 hours at a time. As a result, it is best to study for 2–3 hours at a time, with short rests in between.

Q2. Is the NCERT book enough for CBSE Class 9 Science?

For Class 9 Science, CBSE recommends NCERT books. However, if you want to get full marks in Class 9 Science exams, you must go beyond the NCERT textbook. You’ll require thorough NCERT Solutions for Class 9 Science, as well as CBSE Notes for Class 9 Science, NCERT Exemplar solutions, practice papers, and crucial questions.

Q3. Are CBSE Class 9 Physics Notes sufficient for exam preparation?

CBSE Class 9 Physics Notes cover important topics and concepts related to the subject and can be useful study material for students preparing for their exams.