Multiple Choice
Which of the following types of electromagnetic waves has the shortest wavelength?
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9. Quantum Mechanics
Electromagnetic Spectrum
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Which region of the electromagnetic spectrum has the longest wavelength?
A
Infrared
B
Ultraviolet
C
Radio waves
D
X-rays
Verified step by step guidance1
Recall that the electromagnetic spectrum is arranged by wavelength from longest to shortest. The main regions include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
Understand that wavelength and frequency are inversely related by the equation \(\lambda = \frac{c}{\nu}\), where \(\lambda\) is wavelength, \(c\) is the speed of light, and \(\nu\) is frequency.
Identify that radio waves have the lowest frequency and therefore the longest wavelength among the listed options.
Compare the given options: Infrared, Ultraviolet, X-rays, and Radio waves. Radio waves have wavelengths longer than infrared, ultraviolet, and X-rays.
Conclude that the region of the electromagnetic spectrum with the longest wavelength among the options is Radio waves.
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