Halliday, Resnick & Walker — Waves–I: Problem Problem_78

The speed of electromagnetic waves (which include visible light, radio, and x rays) in vacuum is \(3.0 \times 10^8 \text{ m/s}\). (a) Wavelengths of visible light waves range from about \(400 \text{ nm}\) in the violet to about \(700 \text{ nm}\) in the red. What is the range of frequencies of these waves? (b) The range of frequencies for shortwave radio (for example, FM radio and VHF television) is \(1.5\) to \(300 \text{ MHz}\). What is the corresponding wavelength range? (c) X-ray wavelengths range from about \(5.0 \text{ nm}\) to about \(1.0 \times 10^{-2} \text{ nm}\). What is the frequency range for x rays?