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# Lakhmir Singh Science Class 8 Solutions Friction (Chapter 12)

Friction

Lakhmir Singh and Manjit Kaur Solutions for Class 8 Science Chapter 12 Friction describes the slowing down or resistance of motion. In this chapter, you will study the applications, causes, effects, and other fundamental properties of friction. Every concept is described in a comprehensive and simple language for better understanding.

Other main topics of this chapter of Lakhmir Singh Class 8 Science Solutions includes factors affecting friction, how is friction a necessary evil, how does friction affects our daily life activities, types of friction, what are the methods to increase and reduce the friction, fluid friction, and the role of wheels to reduce friction. Every topic is explained with a diagram and daily life examples for in-depth understanding and better retention.

Lakhmir Singh Solutions for Class 8 Science Chapter 12 Friction contains a total of 5 exercises with 100 questions. To help you master Chapter 12 of Lakhmir Singh Class 8 Science, our subject matter experts have prepared detailed answers to each question. Follow the Lakhmir Singh Solutions to score well in the CBSE exams and various other olympiads of national level.

## Important Topics for Lakhmir Singh Solutions for Class 8 Science Chapter 12 Friction

What is Friction?

Friction is the resistance provided by the surfaces that are in contact with each other when they move over each other.

Factors Affecting Friction

There are the two main factors on which friction depends and that are listed below:

• On the nature of the two planes that are in contact

Friction is reliant on the evenness or unevenness of the two surfaces that are in contact with each other. When the surface is even, the friction between the two decreases as there are not much connecting of irregularities taking place. While the surface is uneven, friction rises.

• On the force that is acting on these planes

When force is applied along with the irregularities, friction rises.

What Causes Friction?

When we see any entity, we can see the even surface but when the same thing is observed under a microscope, it can be seen that even the even looking object has rough edges. Tiny hills and channels can be seen through the microscope and they are called irregularities of the surface. So, when one entity is moved over the other, these irregularities on the surface get entangled providing rise to friction. More the unevenness, the more the irregularities and higher will be the force applied.

Types of Friction

Generally, there are four types of friction available including:

• Static friction
• Sliding friction
• Rolling friction
• Fluid friction

All four types of frictions are unlike each other.

Applications of Friction

The application of frictions are listed below:

• Friction finds application when matchsticks are burned.
• The motion of pistons in a cylinder is an application of friction.
• It is possible to pen on books and boards as there is friction amongst the pen and the board.

### Exercise-Wise Discussion of Lakhmir Singh and Manjit Kaur Solutions for Class 8 Science Chapter 12 Friction

To clear your concepts follow the exercise-wise discussion of Lakhmir Singh Solutions for Class 8 Science Chapter 12. This chapter has a total of 5 exercises with around 100 questions in total. The questions range from basic to advance level so that you can easily understand each and every topic of the chapter.

Exercise 1 – Very Short Answer Type Questions

The first exercise of the chapter has around 35 questions which are very short answer type questions. These questions are based on the applications, causes, effects, and other fundamental properties of friction.

Exercise 2 – Short Answer Type Questions

This exercise has around 30 questions which are completely related to the main topics of this chapter including factors affecting friction, how is friction a necessary evil, how does friction affects our daily life activities, types of friction, what are the methods to increase and reduce the friction, fluid friction, and the role of wheels to reduce friction.

Exercise 3 – Long Answer Type Questions

This exercise set has a total of 10 questions which are long answer type questions and you need to provide a detailed explanation in these questions.

Exercise 4 – Multiple Choice Question (MCQs)

This exercise set has a total of 20 questions in which you need to choose the right answer from the options given.

Exercise 5 – Questions Based on High Order Thinking Skills

This exercise set has a total of 5 questions in which there are questions based on high order thinking skills.

If you face issues in solving the questions, you can refer to Lakhmir Singh Solutions for Chapter 12 – Friction by Instasolv.

## Benefits of Lakhmir Singh Solutions for Class 8 Science Chapter 12 Friction

• Solutions of Lakhmir Singh for Class 8 Science Chapter 12 ‘Friction’ enable you to recognize all the basics and high-level theories for solving all the questions.
• Our Science teachers particularly give attention to clearing your doubts and provide you with a detailed understanding of the topics.
• Lakhmir Singh Solutions for Class 8 Science have been uploaded by our experts to provide you with the advantage of stepwise solutions.
• Lakhmir Singh and Manjit Kaur solutions have given the top edge to your hard work and preparations and will help you to understand the topics easily.
• All the solutions based on the topics of Chapter 12 Friction are prepared as per the CBSE syllabus.

A strong base and good understanding in Chapter 14 of Class 8 Science helps you to crack all the difficult problems. So, follow the Lakhmir Singh Solutions provided by Instasolv now!

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