Thus, the electric energy density of an electromagnetic wave is equal to its magnetic energy density. Hence, the correct answer is option A.
What is electromagnetic wave propagation?
The changing magnetic field, in turn, induces an electric field so that a series of electrical and magnetic oscillations combine to produce a formation that propagates as an electromagnetic wave. … At the same frequency, the magnetic field oscillates perpendicular to the electric field.
What is the direction of propagation of electromagnetic wave?
The direction of propagation of the electromagnetic wave is always perpendicular to the plane in which E and B lies. So, the direction of the propagation of the wave, C =E×B.
Can electromagnetic waves travel in a vacuum?
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
What are the different types of waves according to direction of propagation?
Categorizing waves on this basis leads to three notable categories: transverse waves, longitudinal waves, and surface waves. A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves.
What are the two main forms of wave propagation?
Waves come in two kinds, longitudinal and transverse. Transverse waves are like those on water, with the surface going up and down, and longitudinal waves are like of those of sound, consisting of alternating compressions and rarefactions in a medium.
What are the 7 electromagnetic waves in order?
The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
How many types of wave propagation are there?
Hint: There are three types of modes of propagation of electromagnetic waves: Ground wave propagation, Space wave propagation and Skywave propagation.
Which property of an electromagnetic wave depends on the medium in which it is Travelling?
2. Which property of an electromagnetic wave, depends on the medium in which it is travelling? Explanation: The frequency, wavelength and time period can all vary according to the wave producing source. But, the velocity of an electromagnetic wave depends upon the medium through which it is travelling.
What type of wave nature do electromagnetic waves have?
Electromagnetic waves are transverse waves. That means the electric and magnetic fields change (oscillate) in a plane that is perpendicular to the direction of propagation of the wave. Also note that electric and magnetic fields in an EM wave are also perpendicular to each other.
Which parameter is unity in a medium?
Which parameter is unity in air medium? Explanation: In free space or air medium, the relative permeability is also unity, like relative permittivity. The absolute permeability is given by 4π x 10–7 units.
What is the angle between the direction of oscillation of the light waves and the direction of propagation?
If two oscillations lie on the same plane, then the angle between them is 0∘ and vice-versa. Thus here, the angle between the direction of propagation and plane of polarisation is 0∘.
Which property among the following is false for electromagnetic waves?
Which of the following statement is false for the properties of electromagnetic waves? both electric and magnetic field vectors attain the maxima minima at the same place and same time. both electric and magnetic field vectors are parallel to each other perpendicular to the direction of propagation of wave.
What is the frequency of 20 mm microwaves?
400 MHz | Chegg.com.
What are the 7 types of radiation?
This range is known as the electromagnetic spectrum. 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 are the 4 types of radiation?
There are four major types of radiation: alpha, beta, neutrons, and electromagnetic waves such as gamma rays. They differ in mass, energy and how deeply they penetrate people and objects. The first is an alpha particle.
What is the correct order of increasing frequency?
In order of increasing frequency and decreasing wavelength these are: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.
What you mean by propagation?
: the act or action of propagating: such as. a : increase (as of a kind of organism) in numbers. b : the spreading of something (such as a belief) abroad or into new regions.
What are the two types of waves based on the medium in which they propagate?
Mechanical Waves are waves which propagate through a material medium (solid, liquid, or gas) at a wave speed which depends on the elastic and inertial properties of that medium. There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves.
What is wave transfer?
Waves are vibrations that transfer energy from place to place without matter (solid, liquid or gas) being transferred.
How do waves move?
Waves are created by energy passing through water, causing it to move in a circular motion. The ocean is never still. … Wind-driven waves, or surface waves, are created by the friction between wind and surface water. As wind blows across the surface of the ocean or a lake, the continual disturbance creates a wave crest.
What is the motion of surface waves?
Surface waves travel only through solid media. … Love waves have a horizontal motion that moves the surface from side to side perpendicular to the direction the wave is traveling. Of the two surface waves, Love waves move faster. Rayleigh waves cause the ground to shake in an elliptical pattern.
What is the highest point on a wave?
The highest part of the wave is called the crest. The lowest part is called the trough. The wave height is the overall vertical change in height between the crest and the trough and distance between two successive crests (or troughs) is the length of the wave or wavelength.