NCERT Solutions for Class 12 Physics, Chapter 8 - Electromagnetic Waves

In this chapter, you’ll study about Electromagnetic Waves. What are Electromagnetic Waves all about? Electromagnetic Waves or EM waves are waves which are formed by vibrations between a magnetic field and an electric field. In other words, electromagnetic waves are produced when an electric field comes in contact with a magnetic field. These fields are perpendicular to each other as well as to the direction of the electromagnetic waves formed. In this chapter, you’ll study about displacement current, its results, a detail description of electromagnetic waves, types of such waves, sources and nature of electromagnetic waves. It is interesting to know that electromagnetic waves have wide applications such as for broadcasting television and radio signals, for heating food in microwaves, taking x-rays, night vision cameras, wireless communication, GPS technology, headsets, headphones and most commonly mobile phones.

Thus, an in-depth study of Class 12 Physics NCERT Solutions Chapter 8 will give you a good understanding of significant aspects of Electromagnetic Waves.

Let’s take a look at topics and sub-topics of Class 12 Physics Chapter 8– Electromagnetic Waves

8.1 Introduction

8.2 Displacement Current

8.3 Electromagnetic Waves

8.3.1 Sources of electromagnetic waves

8.3.2 Nature of electromagnetic waves

8.4 Electromagnetic Spectrum

8.4.1 Radio waves

8.4.2 Microwaves

8.4.3 Infrared waves

8.4.4 Visible rays

8.4.5 Ultraviolet rays

8.4.6 X-rays

8.4.7 Gamma rays

In Class 12 Physics Chapter 8, you will learn – 

Section 8.2 – In this section, you will study what Displacement Current is all about, what is Ampere-Maxwell law, Maxwell’s equations, characteristics and diagrams related to displacement current.

Section 8.3 – In this section, you’ll acquire knowledge about electromagnetic waves, sources, nature and applications of electromagnetic waves, how electronic waves are produced, and experiments done by Heinrich Rudolf Hertz in the field of electromagnetic waves along with some solved examples.

Section 8.4 – In this section, you’ll learn about different types of electromagnetic waves in order of decreasing wavelengths such as Radio waves, Microwaves, Infrared waves, Visible rays, Ultraviolet rays, X-rays and Gamma rays. You’ll study how these rays are produced and detected, their frequency range, and applications.

In this chapter, you are provided with several examples with their solutions for clear understanding of Electromagnetic Waves. To know more about NCERT Solutions for Class 12 Physics Chapter 8, you should explore the exercises mentioned in this chapter. You can also download the NCERT Solutions for Class 12 Physics Chapter 8 PDF, solved by our science experts.