A microphone picks up a sound wave. The microphone is linked to a cathode-ray oscilloscope (CRO). The pattern of the trace shown on the CRO screen is shown. Which property of the sound wave can be found by using only a horizontal measurement on the screen and the value of a CRO control setting?
- Aamplitude
- Bfrequency
- Cspeed
- Dwavelength