Understanding Wavelength, Frequency, and Velocity
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AP Physics 1 › Understanding Wavelength, Frequency, and Velocity
In the electromagnetic spectrum, __________ have the highest frequency and __________ have the greatest energy per photon.
gamma rays . . . gamma rays
X-rays . . . radio waves
ultraviolet light . . . X-rays
infrared light . . . ultraviolet light
microwaves . . . microwaves
Explanation
The relationship between frequency and energy is determined by Planck's constant in a direct relationship. This means that as frequency increases, energy increases as well.
The electromagnetic waves with the highest frequency will have the greatest energy per photon, and vice versa.
In the electromagnetic spectrum, radio waves have the lowest frequency (largest wavelength) and gamma rays have the highest frequency (shortest wavelength). Gamma rays will thus have the highest frequency and greatest energy.