which one or more of the following statements is/are true about electromagnetic waves? a. the shorter the wavelength, the higher the frequency. b. the higher the frequency, the longer the wavelength. c. the lower the frequency, the longer the wavelength. d. higher-frequency electromagnetic waves travel faster than lower-frequency electromagnetic waves. e. lower-frequency electromagnetic waves travel faster than higher-frequency electromagnetic waves. f. the lower the frequency, the shorter the wavelength.
