Multiple Choice
Which type of electromagnetic waves have the longest wavelengths?
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9. Quantum Mechanics
Electromagnetic Spectrum
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Which of the following is NOT a form of electromagnetic radiation?
A
Sound waves
B
Gamma rays
C
Infrared light
D
Ultraviolet light
Verified step by step guidance1
Understand that electromagnetic radiation consists of waves that propagate through the electromagnetic field, including visible light, gamma rays, infrared, ultraviolet, X-rays, and radio waves.
Recall that electromagnetic waves do not require a medium to travel and can move through a vacuum at the speed of light.
Recognize that sound waves are mechanical waves, which means they require a medium (like air, water, or solids) to travel and are not part of the electromagnetic spectrum.
Compare the options given: Gamma rays, Infrared light, and Ultraviolet light are all types of electromagnetic radiation, while sound waves are not.
Conclude that the correct answer is sound waves because they are mechanical waves, not electromagnetic radiation.
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