Answer :
The human eye detects and interprets wavelengths between 380 nm and 760 nm (400-790 nm) as visible light, whereas ultraviolet radiation ranges from 200 to 400 nm. The infrared portion of the electromagnetic spectrum spans about the range from 1 mm - 750 nm.
What do you understand by the electromagnetic spectrum?
The range of electromagnetic radiation's frequencies, along with their corresponding wavelengths and photon energies, is known as the electromagnetic spectrum.
The electromagnetic spectrum includes electromagnetic waves with frequencies between one hertz and above [tex]10^{25}[/tex]hertz, or wavelengths between thousands of kilometers and a small portion of the size of an atomic nucleus. The electromagnetic waves found within each of these bands are referred to by a different name; starting at the low frequency (long wavelength) end of the spectrum, these are radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. This frequency range is divided into separate bands.
Spectroscopy can be used to separate waves of various frequencies over the majority of the electromagnetic spectrum, resulting in a spectrum of individual frequencies. Spectroscopy is used to investigate how electromagnetic waves interact with matter.
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