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# NCERT Exemplar Class 11 Physics Chapter 6 Solutions: Work, Energy and Power

NCERT Exemplar Solutions for Class 11 Physics Chapter 6 introduces you to the concept of work done by a body. It includes an overview of various forms of energy involving the law of conservation of energy. This chapter of NCERT Exemplar Class 11 Physics also deals with the concept of potential energy and the conservation of mechanical energy.

The main topics covered in this chapter of NCERT Exemplar Class 11 Physics include conservative and non-conservative forces, the law of conservation of energy, work is done, energy, power, types of energy, Work-Energy Theorem, elastic and inelastic collisions in two dimensions, coefficient of restitution/ resilience. The chapter has around 5 exercises with around 48 exemplar problems in total. All the questions are according to the latest guidelines released by CBSE. So, solving the exercises will help you prepare and excel in the exams.

With the help of these solutions, Chapter 6 – Work, Energy and Power is going to be very easy for you to understand. Get 100% accurate and simple NCERT Exemplar Problems Class 11 Physics Solutions explained by expert Science teachers at Instasolv. You can follow these solutions online to clear your doubts and make your concepts stronger.

## Important Topics for NCERT Physics Exemplar Solutions Class 11 Chapter 6 – Work, Energy and Power

What is Work?

Work is the measurement of energy transmission that takes place when an object is displaced by an external force that is pushed in the direction of the displacement.

What is Power?

The rate of doing work is termed as power.

What is Energy?

The capacity for doing work is termed as energy. It may exist in kinetic, potential, chemical, thermal, electrical, nuclear, or different other forms. The SI unit of energy is similar to that of work.

Types of Energy

Although there are many definite types of energy, the two major forms of energy include Kinetic Energy and Potential Energy.

• Kinetic Energy: This type of energy is generally found in moving objects or mass. For example, mechanical energy, electrical energy, etc.
• Potential Energy: It is any form of energy that has put away potential and can be put to future use. For example, nuclear energy, chemical energy, etc.

What is the Principle of Conservation of Energy?

The principle of conservation of energy states that the total mechanical energy of an element remains in equilibrium if the only forces acting upon the body are conventional in nature.

Law of Conservation Of Energy

As we all know, energy can neither be created nor be destroyed. Though, it can be changed from one to another form. The total energy in a remote system remains the same or energy is preserved over time. The mass remains the same in any closed system within borders except for the heat from which can cross borders. According to the law, energy cannot be created and neither can be destroyed but expediently can be changed to various forms.

### Exercise-wise Discussion of NCERT Physics Exemplar Solutions Class 11 Chapter 6 – Work, Energy and Power

Exercise 6.1 – Multiple Choice Question I

The first exercise of the chapter has around 18 questions which are multiple-choice questions. These questions are based on the concept of work done by a body.

Exercise 6.2 – Multiple Choice Question II

This exercise has around 3 questions that are completely related to the various forms of energy involving the law of conservation of energy.

Exercise 6.3 – Very Short Answer Types Questions

This exercise set has a total of 12 questions. These are very short answer type questions based on the concept of potential energy and the conservation of mechanical energy.

Exercise 6.4 – Short Answer Types Questions

Exercise 6.4 has around 12 questions that are completely related to the main topics of this chapter including conservative and non-conservative forces, the law of conservation of energy, work is done, energy, power, types of energy, Work-Energy Theorem, elastic and inelastic collisions in two dimensions, coefficient of restitution/ resilience

Exercise 6.5 – Long Answer Types Questions

This exercise set has a total of 5 questions which are long answer type questions. These NCERT Exemplar problems will help you clear your concepts and have a better understanding of the chapter.

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