Which one of the following types of radiation has the shortest wavelength?
[amp_mcq option1=”Radio waves” option2=”Visible light” option3=”Infrared (IR)” option4=”Ultraviolet (UV)” correct=”option4″]
This question was previously asked in
UPSC CDS-1 – 2020
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.