When the frequency of a wave increases, several things can happen depending on the context and the type of wave in question. For electromagnetic waves, such as light or radio waves, an increase in frequency corresponds to a decrease in wavelength, as described by the equation v = f * λ, where v is the speed of the wave, f is the frequency, and λ (lambda) is the wavelength. This relationship is fundamental because the speed of light in a vacuum is constant. For sound waves, an increase in frequency results in a higher pitch. This is because the pitch of a sound is determined by the frequency of the sound wave; higher frequencies correspond to higher pitches. In the context of wave mechanics, an increase in frequency can also lead to a higher energy of the wave. This is because the energy of a wave is directly proportional to its frequency. In the case of the Doppler effect, if the source of the wave is moving towards the observer, an increase in frequency (and a corresponding decrease in wavelength) is observed. Conversely, if the source is moving away from the observer, the frequency decreases and the wavelength increases. read more >>

A decrease in wavelength at a constant speed is associated with an increase in frequency since waves follow the equation v=f*��, where �� is the wavelength and f is the frequency. The same process happens in reverse when the source is moving away from the observer.read more >>