Question

characters of electromagnetic wave..... ​

Answer 1

Answer:

Characteristics Of Electromagnetic Waves

According to Maxwell, varying the electric field gives rise to a magnetic field. ... Thus, electromagnetic wave consists of sinusoidal time-varying electric and magnetic fields and both the fields are perpendicular to each other.

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Answer 2

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shows a schematic representation of an electromagnetic wave. Various parameters used to describe the different types of electromagnetic radiation are wavelength, frequency, wavenumber, amplitude, and velocity.

i. Wavelength : The distance between two consecutive crests or troughs is called wavelength. It is represented by the symbol a which is a greek letter (lambda). The SI unit for wavelngth is metre (m).

ii. Frequency (v): The number of waves that pass a given point in one second is called frequency. It is represented by the greek lette nu, (v). The SI unit of frequency is Hertz (H2 or s^-1).

iii. Wavenumber (V) : Wavenumber is the number of wavelengths per unit length. Wavenumber is represented by the symbol (nu bar) (V). The commonly used unit for wavenumber is reciprocal centimeter (cm^-1), while the SI unit is m^-1.

iv. Amplitude (A): Amplitude of a wave is the height of the crest. Square of the amplitude denotes the intensity of the radiation.