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Multiple Choice
Which type of electromagnetic wave has wavelengths just longer than those of visible light?
A
Ultraviolet
B
Infrared
C
X-rays
D
Gamma rays
Verified step by step guidance
1
Recall the electromagnetic spectrum order based on wavelength, from longest to shortest: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
Identify the position of visible light within the spectrum, which ranges approximately from 400 nm (violet) to 700 nm (red) in wavelength.
Determine which type of electromagnetic wave has wavelengths just longer than visible light, meaning wavelengths greater than about 700 nm.
Recognize that infrared waves have wavelengths longer than visible light, typically from about 700 nm to 1 mm, placing them immediately after visible light in the spectrum.
Conclude that the electromagnetic wave type with wavelengths just longer than visible light is infrared.