The diagram above represents a transverse travelling wave. Which two points are 180° out of phase?
A and E
B and D
C and F
D and H
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Correct answer is B. BD is 180 degree out of phase. If DF or FH was was in the option, they would still be a correct.
It is B and D. The answer selected is wrong. They are not even out of phase at all
In a transverse travelling wave, points that are 180° out of phase are in opposite phases of the wave. Upon reviewing the diagram, it appears that points B and D are indeed 180° out of phase. This is because when one point is at its maximum displacement, the other point is at its minimum displacement, and vice versa. So, the correct answer is option B: B and D.
the correct answer is b because for the wave to be 180 degrees out of phase the two points have to be in opposite directions or have a distance of half a wave cycle between them
