• Written By Abhishek_verma
  • Last Modified 26-08-2022

NCERT Solutions for Class 9 Science Chapter 11 Work and Energy

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NCERT Solutions for Class 9 Science Chapter 11 Work and Energy: The CBSE Class 9 Chapter 11 deals with the topic “Work and Energy”. The NCERT Solutions for Class 9 Science Chapter 11 are created and curated by a team of academic experts at Embibe. Embibe provides more than 2700 questions for practice and 10 reference books.

Solving the NCERT Class 9 Science Solutions for Chapter 11 helps students set a good foundation for their exam preparation. A strong foundation since Class 11 will play an important role in easing the preparation for Class 12 board exams. Students should practice all the questions related to Work and Energy thoroughly. 

NCERT Solutions for Class 9 Science Chapter 11: Important Topics

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, Energy, and how they are interlinked. For effective learning, students are advised to go through all the topics and sub-topics of Class 9 Chapter 11 from the table below.

SectionsTopics
11.1Work
11.1.1Not Much ‘Work’ in Spite of Working Hard!
11.1.2Scientific Concept of Work
11.1.3Work Done by a Constant Force
11.2Energy
11.2.1Forms of Energy
11.2.2Kinetic Energy
11.2.3Potential Energy
11.2.4Potential Energy of an Object at a Height
11.2.5Are Various Forms of Energy Interconvertible
11.2.6Law of Conservation of Energy
11.3Rate of Doing Work
11.3.1Commercial Unit of Energy

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

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

Students can get the NCERT Solutions for Class 9 Science from the following:

FAQs on NCERT Solutions for Class 9 Science Chapter 11

Q.1: Where can students get the NCERT Solutions for Class 9 Science Chapter 11?

Ans: Students can get the NCERT Solutions for Class 9 Science Chapter 11 at Embibe.

Q.2: Are NCERT textbooks enough for Class 9 Science board exams?

Ans: Yes. The NCERT books are sufficient for Class 9 Science exams. These textbooks help students to develop a sound understanding of all the concepts.

Q.3: Which topic is covered under the CBSE Class 9 Science Chapter 11?

Ans: The topic covered under the CBSE Class 9 Science Chapter 11 is Work and Energy.

Q.4: Where can students find the best NCERT Solutions for Class 9 Science Chapter 11?

Ans: Embibe provides the best NCERT Solutions for students studying in CBSE Class 9.

Q.5: How can students score good marks by using NCERT Solutions for Class 9 Science Chapter 11?

Ans: NCERT Solutions for Class 9 Science Chapter 11 will help them solve all their academic doubts and enhance their confidence.

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