The energy of electromagnetic waves depends on their frequency. Low-frequency waves have little energy and are normally harmless. High-frequency waves have a lot of energy and are potentially very harmful.
What are the factors of electromagnetic waves?
Electromagnetic waves consist of both electric and magnetic field waves. These waves oscillate in perpendicular planes with respect to each other, and are in phase. The creation of all electromagnetic waves begins with an oscillating charged particle, which creates oscillating electric and magnetic fields.
What do electromagnetic waves require?
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.
Does electromagnetic wave depend on frequency?
Factors Affecting Wave Speed:
Electromagnetic waves, like any wave, have a finite speed value which is dependent upon the properties of the medium through which it flows. … While the speed can be calculated from knowledge of the frequency and wavelength, its value is not affected by changes in frequency and wavelength.
What does the speed of electromagnetic waves depends on?
Hence the speed of electromagnetic waves depends both on frequency and wavelength. The speed of light is only independent of the intensity. Hence, option C is the correct answer. Note:When electromagnetic waves are passing through a medium, then their speed decreases.
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 are three properties of electromagnetic waves?
Electromagnetic waves are typically described by any of the following three physical properties: frequency (f), wavelength (λ), or intensity (I). Light quanta are typically described by frequency (f), wavelength (λ), or photon energy (E). The spectrum can be ordered according to frequency or wavelength.
How does an electromagnetic wave carries energy from place to place?
In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. In water waves, energy is transferred through the vibration of the water particles.
Which property of an electromagnetic wave depends on the medium in which it is Travelling explain your answer?
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.
How electromagnetic wave is produced and propagated?
The spark current oscillates at a frequency (ν), which is a characteristic of the circuit. … 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.
Do radios use electromagnetic waves?
Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios. These devices receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves.
Which electromagnetic wave has the highest frequency?
Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.
Why does the speed of a wave depend on the medium and not the frequency or wavelength?
If the wavelength decreases at the source, then the frequency increases because the speed has not changed. If the wavelength decreases due to a decrease in speed as the wave enters a different medium, then the frequency is not affected.
On what factors does the velocity of electromagnetic waves in vacuum depends?
On what factors does its velocity in vacuum depend? field vectors, at right angles to each other as well as at right angles to the direction of its propagation. These two field vectors vibrate in the same phase and with the same frequency.
What is the factor that affects the speed of electromagnetic waves passing through the different material?
This is observed in the animation below. The actual speed of an electromagnetic wave through a material medium is dependent upon the optical density of that medium. Different materials cause a different amount of delay due to the absorption and reemission process.
Why do all electromagnetic waves have the same speed?
The speed of a wave is a product of its wavelength and frequency. Because all electromagnetic waves travel at the same speed through space, a wave with a shorter wavelength must have a higher frequency, and vice versa.