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Lakhmir Singh Science Class 8 Solutions Light (Chapter 16)

Lakhmir Singh Solutions for Class 8 Science Chapter 16 – Light illustrates the fundamental properties, applications, and effects of light and its derivatives. Some other main topics of the chapter include laws of reflection, what makes things visible, regular and diffused reflection, multiple images, sunlight – white or coloured, human eyes, what is inside our eyes and what is the braille system.

Chapter 16 of Lakhmir Singh Class 8 Science Solutions – Light is one of the important chapters in Class 8 Science CBSE syllabus. So, all the topics are explained well with the help of the examples and pictorial representation. In this chapter, there are around 5 exercises with a total of 112 questions. All the questions will take you through the wonderful world of Light and will solidify your concepts. 

Practising these questions will not only develop a grip on the topics available in Chapter 16 – Light but also master the concepts that will help you excel in your CBSE exams. All the questions in the Lakhmir Singh Solutions for Class 8 Science are solved as per the latest guidelines of NCERT.

Important Topics for Lakhmir Singh and Manjit Kaur Solutions for Class 8 Science Chapter 16

What is Light?

Light is a form of energy that permits us to see several things present in our environment. Light is an electromagnetic wave that can pass through a medium and vacuum. Sunlight is the only natural source of light. 

Types of Objects

There are two different types of substances and it completely depends on whether they have their own light or not as are listed as follows: 

  • Luminous: These are the substances which have their own light. For example, Bulb and tube light.
  • Non-luminous: These are the substances which do not have their own light. For example, tables, chairs, walls, etc.

Types of Phenomenon

The different types of phenomenon are listed below:

  • Absorption: When light falls on a plane and gets absorbed it is termed as absorption.
  • Transmission: The procedure when light falls on a plane that may pass through it is called transmission.
  • Reflection: The procedure when light reflects or bounces back striking the plane is known as reflection.

What is Reflection?

Reflection is the bouncing back of light rays on striking the plane.

Characteristic of Best Reflector

For any plane to be a good reflector, it should own definite qualities listed as follows:

  • It should have a shiny plane
  • It should have a polished plane
  • It should have a smooth plane

Laws of Reflection of Light

The laws of reflection of light apply to both plane mirrors as well as spherical mirrors.

  • First Law of Reflection: According to the first law of reflection, the incident ray, reflected ray, and normal ray, all lie in the same plane.
  • Second Law of Reflection: According to the second law of reflection, the angle of reflection is always equal to the angle of incidence.

 Exercise-Wise Discussion of Lakhmir Singh Solutions for Class 8 Science Chapter 16 – Light

At Instasolv, we provide step by step solutions for the questions provided in the Class 8 Science Lakhmir Singh book as per CBSE Board guidelines.

Exercise 1 – Very Short Answer Type Questions

The first exercise of the chapter has around 40 questions which are very short answer type questions based on the fundamental properties, applications, and effects of light and its derivatives. Practising these questions will help you clear your concepts.

Exercise 2 –Short Answer Type Questions

This exercise of Chapter 16 – Light has around 36 questions which are short answer type questions related to laws of reflection, what makes things visible, reflected light can be reflected again, regular and diffused reflection, multiple images, sunlight – white or coloured, care of the eyes, what is inside our eyes, visually impaired persons can read and write and what is the braille system.

Exercise 3 –Long Answer Type Questions

Exercise 16.3 of Class 8 Science Chapter 16 consists of a total of 11 questions which are long answer type questions.

Exercise 4 –Multiple Choice Questions (MCQs)

Exercise 4 of Lakhmir Singh Solutions for Class 8 Science Chapter 16 – Light consists of 20 questions that are multiple-choice questions.

Exercise 5 – Questions Based on High Order Thinking

This is the last exercise of the chapter and has around 5 questions which are based on high order thinking. Follow these solutions while preparing for your CBSE exams well.

If you face issues in solving the questions, you can refer to Lakhmir Singh Solutions for Chapter 16 prepared by the experts at Instasolv.

Benefits of Lakhmir Singh and Manjit Kaur Solutions for Class 8 Science Chapter 16 – Light

For most of the cases where serious thinking is complicated, you often find yourselves struggling with the concepts. Hence, Science is considered as one of the hardest subjects added in the prospectus. Instasolv, with the Lakhmir Singh Class 8 Science Solutions for Chapter 16 – Light, is on a mission to make the subject easy for you. We have thus come up with a complete guide for your better understanding, which not only helps them acquire in-depth knowledge but also challenge critical exam questions. To excel in academics and score high marks in your exams, get quick access to the study material provided by the expert science teachers at Instasolv.