shown in figure a S1 S2 D 1m If S S 3mm OP 11 mm then a If a 0 36 degree then destructive interfaces at point P b If a 0 36

Question

shown in figure a S1 S2 D 1m If S S 3mm OP 11 mm then a If a 0 36 degree then destructive interfaces at point P b If a 0 36 degree then constructive interfaces at point O c If a 0 then constructive interfaces at O O

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