The diagram above represents a transverse travelling wave. Which two points are 180^\circ out of phase?
Attached Figure / Diagram
A
A and E
B
B and D
C
C and F
D
D and H
Verified Correct Answer: B.
Physical Principles & Numerical Solution
This means that when one Point is at its highest point, the other is at its lowest point, resulting in a 180-degree phase difference.
Source: Myschool Past Questions Archive (Record #49775)