 # Lakhmir Singh Solutions for Class 10 Physics

Students studying under the Central Board of Secondary Education find the textbooks of Lakhmir Singh and Manjit Kaur as one of their go-to reference materials. These books are designed based on the latest CBSE syllabus. Every concept that is explained in this textbook comes with supporting examples and problems that give students an opportunity to understand the application of formulas and equations.

Lakhmir Singh is considered to be one of the finest teachers of India and has written books on Science. Lakhmir Singh Solutions for Class 10 Physics is one such book that comprises the syllabus that is provided by the CBSE. This textbook consists of concept explanations, practice questions and solved examples.

### Lakhmir Singh and Manjit Kaur Class 10 Physics Chapters

Chapter 1: Electricity
Chapter 2: Magnetic Effects of Electric Current
Chapter 3: Sources of Energy
Chapter 4: Reflection of Light
Chapter 5: Refraction of Light
Chapter 6: The Human Eyes and the Colourful World

These are the six chapters that are explained in the Lakhmir Singh Class 10 Physics textbook Solutions. Every chapter in the textbook is explained with relevant and day-to-day examples. Also, all the numerical problems are explained step by step to make sure that students understand the application of equations and formulas. Following are the question types that are used in the textbook to explain the questions:

• Very short answer type questions
• Multiple-choice questions
• Questions based on higher-order thinking skills

## Lakhmir Singh Class 10 Physics Solutions

### Chapter 1 – Electricity

We all know how important electricity is. It is one of the important sources of energy in modern times. We use electricity in our homes, in industries and for transportation. In this chapter, concepts such as electric potential, electric current, electric power and heating effects of electric current are discussed. After an explanation of every concept, solved examples are given so that students can understand the concepts easily.

Following is the table explaining the number of questions that are present in Chapter 1:

 Very short answer type questions 87 Short question type answers 93 Long answer type questions 11 Multiple-choice questions 56 Higher-order thinking type questions 45 Total questions 292

### Chapter 2 – Magnetic Effect of Electric Current

Chapter 2 Magnetic Effect of Electric Current explains how electric current can be used in the production of the magnetic field. The term magnetic effect of electric current defines the electric current flowing through a wire that can produce a magnetic field around it. The simple way to explain this is electric current can produce magnetism. The concepts such as magnetic field, magnetic field lines, properties of the magnetic field, electromagnetism, the difference between a bar magnet and electromagnet and other concepts, such as what is a motor and what is a generator, are covered in the chapter.

Following is the table explaining the number of questions that are present in Chapter 2:

 Very short answer type questions 72 Short question type answers 34 Long answer type questions 8 Multiple-choice questions 54 Higher-order thinking type questions 33 Total questions 201

### Chapter 3 – Sources of Energy

Every day, we consume energy in different forms. Did you ever think about where we obtain this energy? Energy is obtained by burning fuels such as wood, LPG, kerosene, coal, etc. There are different types and forms of energy. A source of energy is one which provides an adequate amount of energy in a convenient form over a long period of time. Any source of energy can be divided into two categories, and they are

• Renewable source of energy
• Non-renewable source of energy

Non-renewable sources of energy include fossil fuels, such as coal, petroleum, and natural gas. It is defined as a source of energy which cannot be replaced when exhausted. While a renewable source of energy is defined as a source of energy which is present in nature and is inexhaustible. Wind energy and solar energy are two examples of renewable sources of energy.

Following is the table explaining the number of questions that are present in Chapter 3:

 Very short answer type questions 66 Short question type answers 58 Long answer type questions 9 Multiple-choice questions 64 Higher-order thinking type questions 24 Total questions 221

### Chapter 4 – Reflection of Light

Chapter 4 discusses what light is and how the reflection of light takes place. As we know, light is a form of energy. Light helps us in seeing objects. This takes place when the light is either coming from the object or getting reflected from the object. Concepts such as plane mirrors, convex mirrors, concave mirrors, and reflections from these mirrors are covered in this chapter.

Following is the table explaining the number of questions that are present in Chapter 4:

 Very short answer type questions 61 Short question type answers 71 Long answer type questions 13 Multiple-choice questions 40 Higher-order thinking type questions 22 Total questions 207

### Chapter 5 – Refraction of Light

In the previous chapter, we learnt that light always travels in a straight path. This statement is true as long as the light rays are travelling in the same medium and the density of the medium is the same throughout. What happens to the light ray when the medium is changed? When the medium changes, the light rays won’t travel in a straight line. The change in the direction of light when it passes from one medium to another is known as the refraction of light.

Concepts, such as laws of refraction, sign convention for lenses and refraction through lenses, are covered in this chapter. Following is the table explaining the number of questions that are present in Chapter 5:

 Very short answer type questions 82 Short question type answers 68 Long answer type questions 20 Multiple-choice questions 58 Higher-order thinking type questions 19 Total questions 247

### Chapter 6 – The Human Eye and the Colourful World

The human eye works on the principle of refraction of light through a natural convex lens which is made up of transparent living material which enables humans to see things around them. The main parts of the human eye are the cornea, iris, pupil, ciliary muscles, eye lens, retina and optic nerve. In Chapter 6, students will learn the working and construction of the human eye. Also, concepts such as refraction of light through glass prism scattering of light by the atmosphere and atmospheric refraction are also discussed in the chapter.

Following is the table explaining the number of questions that are present in Chapter 6:

 Very short answer type questions 78 Short question type answers 52 Long answer type questions 7 Multiple-choice questions 51 Higher-order thinking type questions 22 Total questions 210

### Why Lakhmir Solution by BYJU’S

Following are the reasons why students should refer to Lakhmir Solution Class 10 Physics solutions provided by BYJU’S:

• All the mathematical problems are explained step-by-step.
• The solutions available at BYJU’S are comprehensive study material that a student requires.
• Relevant images are used to explain the answers.