Multiple Choice
What is the energy (in joules) of a photon of red light with a wavelength of 675 nm? (Use h = 6.626 × 10^{-34} J·s and c = 3.00 × 10^8 m/s.)
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9. Quantum Mechanics
Wavelength and Frequency
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Which colors make up the range of visible light in the electromagnetic spectrum?
A
Pink, turquoise, gold, silver
B
Red, orange, yellow, green, blue, indigo, violet
C
Ultraviolet, infrared, microwave, radio
D
Black, white, gray, brown
Verified step by step guidance1
Understand that the visible light spectrum refers to the range of electromagnetic radiation that can be detected by the human eye.
Recall that visible light consists of a continuous range of colors, often remembered by the mnemonic ROYGBIV, which stands for Red, Orange, Yellow, Green, Blue, Indigo, and Violet.
Recognize that colors like pink, turquoise, gold, silver, black, white, gray, and brown are not part of the pure visible spectrum but are rather combinations or perceptions of light and pigments.
Note that ultraviolet, infrared, microwave, and radio waves are types of electromagnetic radiation outside the visible spectrum, either with shorter or longer wavelengths than visible light.
Conclude that the correct colors making up the visible light spectrum are Red, Orange, Yellow, Green, Blue, Indigo, and Violet.
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