A wave is traveling along a string. At an instant shape of the string is as shown in the enclosed figure. At this instant, point A is moving upwards. Which of the following statements are correct?
A
The wave is travelling to the right
B
Displacement amplitude of the wave is equal to displacement of B at this instant
C
At this instant velocity of C is also directed upward
D
Phase difference between A & C may be equal to 
Text Solution
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(b, d)
Wave is travelling leftward. C is moving downward at this instant and phase difference between A and C is 
as they have velocity in opposite direction and having same displacement.
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