Multiple Choice
Which of the following wavelengths is in the infrared range of the electromagnetic spectrum?
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9. Quantum Mechanics
Electromagnetic Spectrum
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which form of electromagnetic radiation has the longest wavelengths?
A
Radio waves
B
X-rays
C
Ultraviolet light
D
Gamma rays
Verified step by step guidance1
Recall the electromagnetic spectrum, which organizes electromagnetic radiation by wavelength and frequency.
Understand that wavelength (\( \lambda \)) and frequency (\( \nu \)) are inversely related by the equation:
\[ \lambda = \frac{c}{\nu} \]
where \( c \) is the speed of light.
Identify the types of electromagnetic radiation listed: radio waves, X-rays, ultraviolet light, and gamma rays.
Know that radio waves have the lowest frequency and therefore the longest wavelength, while gamma rays have the highest frequency and shortest wavelength.
Conclude that among the options, radio waves have the longest wavelengths.
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