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If microwaves, rays, infrared, gamma rays, ultraviolet, radio waves and visible parts of the electromagnetic spectrum are denoted respectively by , , , , , and the following is the arrangement in ascending order of the wavelength
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, , , , , and
The electromagnetic (EM) spectrum is the range of all types of EM radiation. The ray has a maximum frequency or minimum wavelength; since the wavelength is inversely proportional to frequency, while radio wave has a minimum frequency and maximum wavelength. The order of wavelength will be; Gamma rays < X-rays < Ultra violet < Visible rays < Infrared rays < Microwaves < Radio waves .
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