NCERT Solutions for class 9 Science provided herein are designed by our subject matter experts in a simple and precise manner. These solutions comprises answers to all the problems, given in the chapter Work and Energy, of the textbook prescribed by NCERT. It covers answers to all the in between exercises and exercises given at the end of the chapter.
The solutions are provided to clarify the concept of Work including the topic not much ‘work’ in spite of working hard! scientific conception of work, work done by a constant force by explaining that There is a difference in the way we use the term ‘work’ in day-to-day life and the way we use it in science. The ideas and concepts presented through the solved numerical problems and solutions to the in between exercises will provide the learners a set of tools with which they can understand about the scientific concept of work. The simple and comprehensible solutions will help the learner to understand the concept of Energy including how to forms of energy, kinetic energy. The learner can master the art of solving numerical problems by following and practicing the fully solved step by step explanations that serve as a guide. The solutions will provide an overview of the complete chapter bringing the key ideas into a clear perspective.
Along with these concepts potential energy including potential energy of an object at a height, are various energy forms interconvertible? law of conservation of energy and rate of doing work, commercial unit of energy have been explained in NCERT Grade 9 Chapter 11, Work and Energy. The solutions to the questions mentioned in between and at the end of the chapter are framed by our subject matter experts and comprises step by step answer to all the problems. Students are, therefore, advised to go through these solutions to know more about the fundamental principles and concepts of the topic involved and to score well in the exam. Get 100 percent accurate NCERT Solutions for Class 9 Science Chapter 11 (Work and Energy) explained by expert Science teachers. We provide solutions for the questions given in Class 9 Science textbook as per CBSE Board guidelines from the latest NCERT book for Class 9 Science. The topics and sub-topics in Chapter 11 Work and Energy are given below.
Ex 11.1 - Work
Ex 11.1.1 - NOT MUCH ‘WORK’ IN SPITE OF WORKING HARD!
Ex 11.1.2 - SCIENTIFIC CONCEPTION OF WORK
Ex 11.1.3 - WORK DONE BY A CONSTANT FORCE
Ex 11.2 - Energy
Ex 11.2.1 - FORMS OF ENERGY
Ex 11.2.2 - KINETIC ENERGY
Ex 11.2.3 - POTENTIAL ENERGY
Ex 11.2.4 - POTENTIAL ENERGY OF AN OBJECT AT A HEIGHT
Ex 11.2.5 - ARE VARIOUS ENERGY FORMS INTERCONVERTIBLE?
Ex 11.2.6 - LAW OF CONSERVATION OF ENERGY
Ex 11.3 - Rate of Doing Work
Ex 11.3.1 - COMMERCIAL UNIT OF ENERGY.
We cover all exercises in the chapter given below:-
EXERCISE 11.1 - 1 Question with Solution
EXERCISE 11.2 - 4 Questions with Solutions
EXERCISE 11.3 - 3 Questions with Solutions
EXERCISE 11.4 - 4 Questions with Solutions
EXERCISE 11.5 - 21 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Work and Energy. Download the free PDF of Chapter 11 Work and Energy and take the print out to keep it handy for your exam preparation.