True or False: The signal speed remains the same, while both wavelength and frequency change.

The statement that signal speed remains the same while both wavelength and frequency change is true because of the relationship defined by the wave equation: speed = frequency × wavelength. In this equation, when either frequency or wavelength changes, the other must adjust accordingly in order to keep the speed constant.

For instance, if the frequency of a wave increases, this requires a decrease in wavelength in order to maintain the same speed of the wave. Conversely, if the frequency decreases, the wavelength increases while still keeping the signal speed unchanged. This dynamic illustrates the direct interdependence of frequency and wavelength, both influenced by the constant speed of the signal in a given medium. Thus, the correct response reflects this fundamental principle of wave behavior.