light travelling in air is incident on a soap bubble. If the path difference through the soap bubble is 2.5λ:
a) constructive interference will occur
b) destructive interference will occur
c) partial interference will occur
d) none of the above

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  1. Constructive interference will occur, cos
    constructive interference occurs wen d path difference btw identical waves at a point is n¦Ë...where n = 0,1,2,3...
    Destructive interference occur wen d path difference btw two identical waves at a point is n¦Ë 1/2¦Ë where n = 1,2,3,4...

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