Which one of the following types of radiation has the shortest

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Which one of the following types of radiation has the shortest wavelength?

Radio waves
Visible light
Infrared (IR)
Ultraviolet (UV)
This question was previously asked in
UPSC CDS-1 – 2020
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The electromagnetic spectrum consists of various types of radiation ordered by frequency or wavelength. From longest wavelength to shortest wavelength, the order is typically: Radio waves, Microwaves, Infrared (IR), Visible light, Ultraviolet (UV), X-rays, Gamma rays. Comparing the options given: Radio waves have the longest wavelength, followed by Infrared, then Visible light. Ultraviolet (UV) light has a shorter wavelength than visible light. Therefore, among the given options, Ultraviolet (UV) radiation has the shortest wavelength.
– The electromagnetic spectrum is ordered by wavelength and frequency.
– Wavelength and frequency are inversely related ($c = f\lambda$).
– Order of increasing frequency/decreasing wavelength: Radio, Micro, IR, Visible, UV, X-ray, Gamma.
Visible light covers wavelengths from approximately 400 nm (violet) to 700 nm (red). UV wavelengths are shorter than visible light, typically ranging from 10 nm to 400 nm. Infrared wavelengths are longer than visible light, typically from 700 nm to 1 mm. Radio waves have wavelengths ranging from about 1 mm to very long distances.

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