NCERT Solutions Class 12 Physics Chapter 8

NCERT Solutions Class 12 Physics Chapter 8- Electromagnetic waves

The NCERT Solutions Class 12 Physics Chapter 8 provides information about Electromagnetic waves and is available on the Extramarks platform. Students preparing to appear for the Class 12 board exams can use these notes to study and check the details of all topics and sub-topics included in this chapter. Our notes offer solutions to all in-text and exercise questions from the NCERT books. The step-by-step answers help students to revise all concepts thoroughly. The physics chapter 8 class 12 notes are based on the latest CBSE curriculum NCERT books for 2022-2023. Students can benefit from the Extamarks NCERT Solutions Class 12 Physics Chapter 8 for their Class 12 exam preparation. 

Chapter 8 Class 12 Physics talks about various concepts related to Electromagnetic waves. Students must have some basic knowledge of Class 11 physics for a quick recap. They can refer to NCERT Solutions Class 11 available on Extramarks. The chapter includes the basic introduction to Electromagnetic Waves, Displacement Current, Sources of electromagnetic waves, Electromagnetic Spectrum, and different types of electromagnetic waves. Students will learn about the nature of the concepts that will help them prepare for Chapter 8 Physics Class 12 thoroughly.  

NCERT Solutions Class 12 Physics Chapter 8 helps students attain high scores. With help from these solutions, students can comprehend all vital concepts and theories from this chapter. Students can also refer to NCERT Solutions Class 8, NCERT Solutions Class 9, and NCERT Solutions Class 10 to get a quick recap of the subject. 

Key Topics Covered In NCERT Solutions Class 12 Physics Chapter 8

In Extramarks NCERT Solutions Class 12 Physics Chapter 8, students can be assured that all topics are included and defined in detail. By referring to these solutions, students can prepare for board examinations and entrance tests such as NEET and JEE (Main and Advanced) exams. Subject elites at Extramarks have covered the following key topics in the NCERT Solutions Class 12 Physics Chapter 8:

8.1 Introduction

In the introductory section, students will gain complete information regarding all vital concepts of Electromagnetic waves. The definition of the EM waves and their behavior in the three axes has been included in a simplified manner. The various properties of electromagnetic waves and their behavior in different conditions are explained in detail in the NCERT Solutions Class 12 Physics Chapter 8. Students will also learn about different laws and equations of electromagnetic waves and some practical uses in our everyday lives. 

Some main features of this chapter are 

• Maxwell’s equations
• Ampere’s Circuital Law
• Oscillation of Electric and Magnetic Fields

8.2 Displacement Current

This section aids students to understand the concept of displacement current. It is explained with the help of this formula, id= 0 dEdt 

It also includes Maxwell’s basic equations based on electricity and magnetism. With the help of NCERT Solutions class 12 Physics Chapter 8, students can get a clear idea of Gauss’ law of Magnetism and Electricity, Faradays’ law of electromagnetic induction, and Amperes’ modified form of Circuital law. These equations help students to get complete information on all electromagnetic interactions. In addition, Maxwell’s equations depict the relationship between electricity, magnetism, and ray optics. In this section of the NCERT Solutions Class 12 Physics Chapter 8, the similarities between conduction current and displacement current are also analysed. 

8.3 Electromagnetic Waves

This section is bifurcated into two sub-parts, Sources of electromagnetic waves and Nature of electromagnetic (EM) waves. Students also learn about energy and some properties of EM waves. A detailed explanation of the oscillation of electric and magnetic fields and relation between oand odenoted by speed (c) is included in the NCERT Solutions Class 12 Physics Chapter 8. 

Under the nature of the wave topic, important concepts are explained, such as electric field, wavenumber, and magnetic field of an EM wave. Using Maxwell’s equations, it is proved that the total energy carried per unit volume by an Electromagnetic wave = Et = E2o. The Velocity and Momentum of the EM wave are also explained with the help of their formulae. 

There are various numerical questions asked based on the formulas mentioned in this section. Extramarks NCERT Solutions Class 12 Physics Chapter 8 covers all the essential formulae for reference.

8.4 Electromagnetic Spectrum

In this section of Chapter 8, students learn about the sequential distribution of electromagnetic waves based on frequency or wavelength. The NCERT solutions Class 12 Physics Chapter 8 also includes detailed information about the different types of EM waves. They are Radio Waves, Infrared waves, Microwaves, Visible rays, Ultraviolet (UV) rays, X-rays, and Gamma rays. 

Students learn about the characteristics, wavelength, and applications of these waves with the help of the NCERT Solutions Class 12 Physics Chapter 8. The variations in the wavelength and amplitude of these waves depending upon the effect of an electric field and a magnetic field are also summarised. Students are expected to remember the EM spectrum in terms of decreasing or increasing order of wavelength. 

NCERT Solutions Class 12 Physics Chapter 8

NCERT Solutions Class 12 Physics Chapter 8 Electromagnetic waves are available on the Extramarks web portal. The notes include well-explained and step-by-step solutions for all questions of NCERT books. The physics chapter 8 class 12 notes cover all essential topics by following a specific format. This enables them to revise the chapter quickly. Students can also view NCERT Solutions of other chapters included in the NCERT Physics Syllabus of Class 12. With the help of these notes, they can try to solve the questions on their own. 

Refer below for full details about NCERT Solutions Class 12 Physics Chapter 8: 

Students can also check out and explore other NCERT Solutions from the latest edition of CBSE(NCERT) books on our Extramarks website: 

• NCERT Solutions Class 1
• NCERT Solutions Class 2
• NCERT Solutions Class 3
• NCERT Solutions Class 4
• NCERT Solutions Class 5
• NCERT Solutions Class 6
• NCERT Solutions Class 7
• NCERT Solutions Class 8
• NCERT Solutions Class 9
• NCERT Solutions Class 10
• NCERT Solutions Class 11

NCERT Exemplar Class 12 Physics

The NCERT Exemplar Problems with Solutions is available on the Extramarks website. In addition, all CBSE students can use the NCERT Solutions Class 12 Physics Chapter 8 to get a clear understanding of the topic. It includes MCQs, HOTS, Worksheets, objective and subjective questions. These NCERT Solutions are an important resource that will help students in the CBSE exams and competitive entrance examination preparation. 

Extramarks realizes the importance of Exemplar books for students of Class 12. Hence, we provide all-inclusive NCERT Exemplar Class 12 Physics Solutions. It will help students to get important tips and shortcut methods useful for solving physics problems accurately in no time. At Extramarks, students can also get different study materials like CBSE previous year question papers, CBSE sample papers, etc., to boost the exam preparation. 

Key Features of NCERT Solutions Class 12 Physics Chapter 8

In the NCERT Solutions Class 12 Physics Chapter 8, every question is solved with the utmost care by the experts at Extramarks. These solutions are with reference to the CBSE syllabus keeping in mind the marks allotted for each concept. It is an important reference material as it helps students gain confidence and thus establish a strong command of the subject. 

Students can prepare for the annual examinations with the help of the NCERT Solutions Class 12 Physics Chapter 8. The notes are created in a simple and concise manner to make even the most difficult concept easy to understand. Here are some more features:

• The NCERT Solutions Class 12 Physics Chapter 8 helps students to increase their preparation level

• The NCERT Solutions prepares students to attempt Physics questions of all difficulty levels.
• Students may refer to the notes to clear their doubts, especially with difficult topics.