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Question
Answer briefly.
Draw a wave and indicate points which are
- in phase
- out of phase
- have a phase difference of `pi/2`
Solution
- In phase point: A and F; B and H; C and I; D and J
- Out of phase points: A and B, B and D, H and J, E and F, etc.
- Point having phase difference of `pi/2`:
A and B; B and C; C and D; D and F; F and H; H and I; J and I
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