Multiple Choice
Which of the following are the three primary ways to describe electromagnetic energy?
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9. Quantum Mechanics
Electromagnetic Spectrum
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Which type of electromagnetic radiation has the shortest wavelength and is least penetrating?
A
Ultraviolet light
B
Radio waves
C
X-rays
D
Gamma rays
Verified step by step guidance1
Recall the electromagnetic spectrum, which orders types of electromagnetic radiation by their wavelength and energy.
Understand that wavelength and energy are inversely related: shorter wavelengths correspond to higher energy and greater penetrating power.
Identify that gamma rays have the shortest wavelength and highest energy, making them the most penetrating type of radiation.
Recognize that radio waves have the longest wavelength and lowest energy, which means they are the least penetrating.
Conclude that among the options, radio waves have the longest wavelength and are least penetrating, while gamma rays have the shortest wavelength and are most penetrating.
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