Electromagnetic waves can be split into a range of frequencies. This is known as the electromagnetic spectrum. Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc.
What are 2 electromagnetic waves?
Radio waves, television waves, and microwaves are all types of electromagnetic waves. They only differ from each other in wavelength. Wavelength is the distance between one wave crest to the next.
What are electromagnetic waves Class 9?
Electromagnetic waves are also known as EM waves. Electromagnetic radiations are composed of electromagnetic waves that are produced when an electric field comes in contact with the magnetic field. It can also be said that electromagnetic waves are the composition of oscillating electric and magnetic fields.
What are electromagnetic waves Class 12?
Electromagnetic waves are those waves in which electric and magnetic field vectors changes sinusoidally and are perpendicular to each other as well as at right angles to the direction of propagation of wave.
What do you mean by electromagnetic?
Electromagnetic is used to describe the electrical and magnetic forces or effects produced by an electric current. … electromagnetic fields.
How many electromagnetic waves are there?
The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.
What is the 7 electromagnetic waves?
In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.
What are electromagnetic waves Class 10?
Therefore Electromagnetic waves are defined as the waves formed by an oscillating or varying magnetic and electric field so that they are perpendicular to each other and also perpendicular to the direction of propagation. The equation of EM waves are obtained from the solutions of Maxwell’s equations. 1.
What is electromagnetic wave theory class 11?
The main points of electromagnetic wave theory were : When an electrically charged particle moves under acceleration, alternating electrical and magnetic fields are produced and transmitted. These fields are transmitted in the form of waves. These waves are called electromagnetic waves or electromagnetic radiations.
What is electromagnetic spectrum Class 11?
Electromagnetic spectrum. Electromagnetic spectrum. When all the electromagnetic radiations are arranged in order of increasing wavelengths, and decreasing frequencies the complete spectrum is called electromagnetic spectrum as shown below: Limitations of this theory.
What are the 4 main properties of electromagnetic waves?
Every form of electromagnetic radiation, including visible light, oscillates in a periodic fashion with peaks and valleys, and displaying a characteristic amplitude, wavelength, and frequency that defines the direction, energy, and intensity of the radiation.
What is an example of an electromagnetic?
Radio waves, microwaves, visible light, and x rays are all examples of electromagnetic waves that differ from each other in wavelength. … Electromagnetic waves are produced by the motion of electrically charged particles.
Which is electromagnetic wave?
Definition of ‘Electromagnetic Waves’ Definition: Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.
Why is it called electromagnetic?
The waves of energy are called electromagnetic (EM) because they have oscillating electric and magnetic fields. … If it has low frequency, it has less energy and could be a TV or radio wave. All EM energy waves travel at the speed of light.