NCERT Solutions For Class 12 Physics Chapter 8 Electromagnetic Waves

 

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NCERT solutions for class 12 Physics chapter 8 Electromagnetic Waves: Maxwell introduced the term displacement current to remove inconsistency in Ampers law.the chapter NCERT solutions for class 12 Physics chapter 8 Electromagnetic Waves starts with the concept of displacement current. Then talks about Maxwell’s equations and electromagnetic wave their properties and applications. NCERT solution for class 12 Physics chapter 8 Electromagnetic Waves also talks about the electromagnetic spectrum. Different electromagnetic waves and their wavelength are listed below.

Electromagnetic wave type

Wavelength range

Radio wave

Greater than 0.1 m

Microwave

0.1m to 1 mm

Infra-red wave

1mm to 700 nm

Light

700 nm to 400 nm

Ultraviolet

400 nm to 1nm

X-rays

1nm to 0.001nm

Gamma rays

Less than 0.001nm

A sample question from NCERT solutions for class 12 Physics chapter 8 Electromagnetic Waves is given below

8.13) Use the formula \lambda _m T = 0.29 cm K to obtain the characteristic temperature ranges for different parts of the electromagnetic spectrum. What do the numbers that you obtain tell you?

This can be solved using the above table.

The topics of NCERT class 12 Physics chapter 8 Electromagnetic Waves are

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

Study the application of EM wave and how EM waves are produced and detected. This will help you in your board exam. Also, the concept of displacement current and Maxwell's equations are important from NCERT grade 12 chapter 8. Another important topic is the equation of electromagnetic wave and relation between the magnetic field, electric field, and speed of light.

Try to solve all the questions of this chapter. The NCERT solutions for class 12 Physics chapter 8 Electromagnetic Waves is given below:

Q- 8.1(a) Figure 8.6 shows a capacitor made of two circular plates each of radius 12 cm, and separated by 5.0 cm. The capacitor is being charged by an external source not shown in the figure. The charging current is constant and equal to 0 15 . Calculate the capaci

Q- 8.1(b) Figure 8.6 shows a capacitor made of two circular plates each of radius 12 cm, and separated by 5.0 cm. The capacitor is being charged by an external source (not shown in the figure). The charging current is constant and equal to 0.15A. Obtain the displac

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NCERT Solutions for Class 12 Physics- Chapter wise

Chapter 1

Electric Charges and Fields

Chapter 2

Electrostatic Potential and Capacitance

Chapter 3

Current Electricity

Chapter 4

Moving charges and magnetism

Chapter 5

Magnetism and Matter

Chapter 6

Electromagnetic Induction

Chapter 7

Alternating Current

Chapter 9

Ray Optics and Optical Instruments

Chapter 10

Wave Optics

Chapter 11

Dual nature of radiation and matter

Chapter 12

Atoms

Chapter 13

Nuclei

Chapter 14

Semiconductor Electronics: Materials, Devices and Simple Circuits

NCERT Solutions for Class 12

 

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