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Wat is the formula for thickness of soap film in destructive interference

Wat is the formula for thickness of soap film in destructive interference

Grade:12th pass

1 Answers

Shivansh
askIITians Faculty 267 Points
3 years ago
For the destructive interference, path difference

δ = (2n+1)λ/2

where n = 0, 1, 2, 3 … and the film appears dark.

2µt cos r + λ/2= (2n+1)λ/2

2µt cos r = nλ

here t is the thickness

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