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Chapter 11 (Physics): Sound – Class 9 NCERT Science Detailed Study Notes. 1. The Nature of Sound Sound is a form of energy that creates a sensation of hearing in our ears. According to the principle of conservation of energy,…
Chapter 10 (Physics): Work and Energy – Class 9 NCERT Science Detailed Study Notes. 1. The Concept of Work 1.1 Everyday vs. Scientific Definition of Work In daily life, “work” refers to any useful physical or mental labor. Activities like…
Chapter 9 (Physics): Gravitation – Class 9 NCERT Science Detailed Study Notes. 1. Introduction to Gravitation 2. Universal Law of Gravitation 3. Free Fall and Acceleration Due to Gravity (g) 4. Mass and Weight Feature Mass (m) Weight (W) Definition…
Chapter 8 (Physics): Force and Laws of Motion – Class 9 NCERT Science Detailed Study Notes. 1. The Concept of Force 1.1 Historical Perspective and Introduction For centuries, scientists and philosophers believed that rest was the “natural state” of an…
Chapter 7 (Physics): Motion – Class 9 NCERT Science Detailed Study Notes. 1. The Concept of Motion Motion is a fundamental phenomenon observed everywhere, from atoms and molecules to planets and galaxies. An object is perceived to be in motion…
In this article we are going to explore electricity and we will focus on the very basics of the topic and cover static and current electricity.
Please download the PowerPoint presentation (PPT) of the chapter "Motion" from here. I used this ppt in my class and students can use this ppt as a short note on the topic "Motion"
