Exams NCERT NCERT Solutions for Class 9 Science Chapter 11: Work and Energy – Download PDF

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Last Modified 14-03-2024

NCERT Solutions for Class 9 Science Chapter 11: Work and Energy – Download PDF

NCERT Solutions for Class 9 Science Chapter 11 Work and Energy: The CBSE Class 9 Chapter 11 deals with the topic ‘Work and Energy’. This chapter is one of the most important chapters as the concepts are directly associated with more complex topics in the higher classes. The NCERT solutions help students solve all intext and exercise questions from the chapter.

Embibe provides the NCERT solutions for Class 9 Science Chapter 11 comprehensively and easily which makes learning effortless. It contains all the solutions described in easy steps, with detailed explanations so that students can grasp the concepts. Embibe also provides 3D videos for in-depth understanding, 1600+ practice questions, and several mock tests to master the chapter. Keep reading to learn more about the NCERT solutions for Class 9 Science Chapter 11.

NCERT Solutions for Class 9 Science Chapter 11

Chapter 11 of Class 9 Science will help students understand the phenomenon called ‘Work’ and its closely related topics, namely Energy and power. Students will then learn about the scientific conception of Work and the influence of constant Force on it. The concept of Energy will follow this, wherein the students will study different forms of Energy – Potential Energy & Kinetic Energy.

In this topic, students learn more about Force, Power, and Energy, and how they are interlinked. Students can learn the concepts on Embibe through 3D videos, practice questions and mock tests to ace the exam. They can refer to the table below for the topics included in Class 9 Science Chapter 11.

Sl. No.	Topics
1	Work
1.1	Not Much ‘Work’ in Spite of Working Hard!
1.2	Scientific Concept of Work
1.3	Work Done by a Constant Force
2	Energy
2.1	Forms of Energy
2.2	Kinetic Energy
2.3	Potential Energy
2.4	Potential Energy of an Object at a Height
2.5	Are Various Forms of Energy Interconvertible
2.6	Law of Conservation of Energy
3	Rate of Doing Work
3.1	Commercial Unit of Energy

NCERT Solutions for Class 9 Science Chapter 11: Points to Remember

Knowing the important points of a chapter is helpful for students to do a quick revision. They can easily refer to them and remember the important points about the entire chapter. While studying, the important points to remember from Class 9 Science are as follows:

When a force causes displacement in a body in its direction, it is said to be doing work. It is a scalar value.
When the displacement is perpendicular to the direction of the force, the work done is zero.
Mechanical energy is defined as the sum of kinetic and potential energy.
The watt is the SI unit of power (W). When 1 J of work is completed in 1 s, the power is said to be 1 W.
The unit of energy is the same as the unit of work, namely the joule (J).
1 kW h1 kW h is the energy consumed in one hour at a rate of 1 kW1 kW. It is a commercial unit of energy and equals 3.6106 J3.6106 J.

NCERT Solutions for Class 9 Science: All Chapters

The NCERT solutions for Class 9 Science help students solve questions and be more confident in the exam. Students can get the NCERT Solutions for Class 9 Science from the following links: