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What is the smallest thickness of a soap film (n=1.33) surrounded by the air that would...

What is the smallest thickness of a soap film (n=1.33) surrounded by the air that would appear dark being illuminated with 450 nm light? Give answer in nm.

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Answer #1

For destructive interference, the condition is given by, Path difference (20) . 1 / Ceven multiple of 2 / ² For smallest thic

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