Two waves travelling in the same direction are given by: y1 = 0.2 sin(3rtx-20t+p) and y2 = 0.2 sin(3Ttx-20t), where x and y are in meters and t is in seconds. If the %3D two waves start at the same moment, then the path difference, Ax, corresponding to a fully destructive interference is: O 2/3 m O 3/4 m O 1/3 m 4/3 m O 1/2 m
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