The two points on the periodic wave which are 180 degrees out of phase are point A and Point C.
When two points of wave are out of phase?
The two points of a wave is said to be out of phase when they show up or down motion at different times.
If a point on the wave, say (X) is reached to the maximum or minimum point before the other point. Then these two points are said to be out of phase.
Also, when the points are 180 degree apart from each other. Which means if a point is in the crest of the wave and other is on the through.
The diagram below shows a periodic wave. In this diagram,
- A and I are the end points of the periodic wave.
- B,C,D,E,F and G are the other points on the periodic wave.
- Here, the point A and C are opposite point of each other. So they are 180 degrees out of phase.
Hence, the two points on the periodic wave which are 180 degrees out of phase are point A and Point C.
Learn more about the periodic wave here;
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