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# HC Verma Electromagnetic Waves Solutions (Chapter 40)

HC Verma Solutions for Class 12 Physics Part-2 Chapter 40 – Electromagnetic Waves helps you find the right answers to questions based on Coulomb’s law, electric field, magnetic field, and the velocity of the particle. Other main topics of the chapter include Maxwell’s displacement current, continuity of electric current, Maxwell’s equations and plane electromagnetic waves, energy density and intensity, momentum, electromagnetic spectrum, and radiation in the atmosphere.

HC Verma Electromagnetic Waves Solutions also deals with the study of calculating the intensity of the wave when the magnetic fields and electric fields are provided. Images and diagrams signifying several components of the electromagnetic waves, make this chapter fun to learn. Also, our experts have curated the detailed solutions of HC Verma Concepts of Physics Part 2 so that there is no space for any kind of doubt regarding the main concepts of the chapter.

This chapter of HC Verma Class 12 Physics Solutions has around 4 exercises with a total of 30 questions. All the questions are according to the latest syllabus released by NCERT. Also, we have made the chapter interesting with our step-by-step solutions so that you can grasp the entire content properly. So, solving the exercises will help you prepare for the CBSE board exams as well as the competitive exams like JEE and NEET. Follow the solutions now!

## Important Topics for HC Verma Concepts of Physics Part-2 Solutions Chapter 40: Electromagnetic Waves

Electromagnetic Waves

Electromagnetic waves are defined as the waves that are formed as a result of vibrations among a magnetic field and an electric field.

Energy Density and Intensity

The amount of energy collected in a given system or region of space per unit volume is known as the energy density. Energy density may also be utilized for energy per unit mass. Although the precise term for this is specific energy.

Momentum

Momentum is defined as a vector quantity of the product of the mass and the velocity of a substance or particle. The SI unit of momentum magnitude is the kilogram-meter per second (kg·m/s).

The direction of a momentum vector can be represented in many ways, depending on the no. Of dimensions included, and is alike as the direction of the velocity vector.

Electromagnetic Spectrum and Radiation in the Atmosphere

The range of frequencies of electromagnetic radiation and the specific photon energies and wavelengths is defined as the electromagnetic spectrum.

Electromagnetic radiation defined as the waves of the electromagnetic field, carrying electromagnetic radiant energy or propagating over space. Electromagnetic radiations contain microwaves, light, radio waves, ultraviolet, gamma rays, infrared, and X-rays.

Maxwell’s Displacement Current

Maxwell’s displacement current density is defined as the amount ∂D/∂t acting in Maxwell’s equations that are described in terms of the rate of change of ‘D’, the electric displacement field.

The Continuity of Electric Current

Continuity equation describes that the rate at which mass moves in a system is equivalent to the rate at which mass goes out of the system. These equations are a stronger, general form of conservation laws. For example, the continuity equation for electric charge defines that the quantity of electric charge in any volume of space can only change by the quantity of electric current going in or out of that volume through its limitations.

### Exercise-wise Discussion for HC Verma Concepts of Physics Part-2 Solutions Chapter 40: Electromagnetic Waves

Exercise 1 –Short Answer Type Questions

This exercise has around 7 questions that are completely related to the main topics of this chapter including Coulomb’s law, electric field, magnetic field, and the velocity of the particle.

Exercise 2 –Multiple Choice Questions I

This exercise set has a total of 9 questions in which you need to choose the right answer from the options given. These questions are based on Maxwell’s displacement current and continuity of electric current.

Exercise 3 –Multiple Choice Questions II

In this exercise, there are 5 multiple-choice questions based on Maxwell’s equations and plane electromagnetic waves. Practising these questions of HC Verma Concepts of Physics Part 2 will help you make your concepts stronger and prepare well for competitive exams like IIT JEE and NEET.

Exercise 4 –Long Answer Type Questions

This exercise set consists of a total of 9 questions which are long answer type questions based on energy density and intensity, momentum, electromagnetic spectrum, and radiation in the atmosphere. Practice well to have a better understanding of the chapter.

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