Multiple Choice
Which of the following correctly describes the relationship between the wavelength (λ) and frequency (ν) of electromagnetic radiation?
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9. Quantum Mechanics
Wavelength and Frequency
Multiple Choice
Which color of visible light has the longest wavelength, and which has the shortest wavelength?
A
Violet has the longest wavelength; red has the shortest wavelength.
B
Yellow has the longest wavelength; orange has the shortest wavelength.
C
Blue has the longest wavelength; green has the shortest wavelength.
D
Red has the longest wavelength; violet has the shortest wavelength.
Verified step by step guidance1
Recall that visible light is a portion of the electromagnetic spectrum with wavelengths approximately between 400 nm and 700 nm.
Understand that the color of visible light corresponds to a specific range of wavelengths: red light has the longest wavelength, and violet light has the shortest wavelength within the visible spectrum.
Remember the order of colors in visible light from longest to shortest wavelength: Red, Orange, Yellow, Green, Blue, Indigo, Violet (often remembered by the acronym ROYGBIV).
Identify that red light has wavelengths around 620-750 nm, making it the longest wavelength visible to the human eye.
Identify that violet light has wavelengths around 380-450 nm, making it the shortest wavelength visible to the human eye.
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