Which of the following expressions correctly compares the energies of visible light (E_visible), microwaves (E_microwave), and radio waves (E_radio)?

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Quizplus · Accepted Answer

11ecba2d_131c_2989_a3bf_05cc8646d6f9_MD0008_00 Electromagnetic radiation refers to oscillating electric and magnetic fields that propagate radiant energy through a medium. The electromagnetic spectrum describes classifications of electromagnetic radiation that differ from one another in terms of waveform characteristics, occurrence in the natural world, and technological utility. The electromagnetic spectrum is typically arranged in order of frequency (f) or wavelength (λ). Because the frequency and wavelength of electromagnetic radiation are inversely proportional, arranging the electromagnetic spectrum from largest wavelength (radio waves) to smallest wavelength (gamma rays) is equivalent to arranging the electromagnetic spectrum from smallest frequency to largest frequency. Alternately, the electromagnetic spectrum may also be ordered in terms of the energy (E) associated with a given electromagnetic waveform, which can be expressed in terms of either electromagnetic frequency or wavelength using Planck's constant (h) and the speed of light (c) as: 11ecba2d_131c_298a_a3bf_37bb0f5c3471_MD0008_00 Accordingly, the energy of electromagnetic radiation is inversely proportional to wavelength and directly proportional to frequency. Consequently, the order of electromagnetic radiation types arranged from lowest energy to highest energy is: 11ecba2d_131c_298b_a3bf_2bf0c91e352b_MD0008_00 adio waves(Choice B). Educational objective: The electromagnetic spectrum consists of radiation types with different wavelengths, frequencies, and energies. Ordering the electromagnetic spectrum in terms of decreasing wavelength is equivalent to ordering the electromagnetic spectrum in terms of increasing energy.

Which of the Following Expressions Correctly Compares the Energies of Visible