Respuesta :
C. It decreases in wave speed.
Period of a wave is the time needed for one complete cycle of vibration to pass a given point. Frequency and period have a reciprocal relationship. Frequency can be similarly thought of as speed of a wave.
Period of a wave is the time needed for one complete cycle of vibration to pass a given point. Frequency and period have a reciprocal relationship. Frequency can be similarly thought of as speed of a wave.