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A thin layer of oil (n = 1.20) floats on the surface of a puddle of...

A thin layer of oil (n = 1.20) floats on the surface of a puddle of water (n = 1.33). One part of the oil film appears bright greenish blue, i.e. it strongly reflects light with a wavelength in vacuum of 497 nm. What is the smallest nonzero film thickness of the oil film in this region?

207 nm
550 nm
458 nm
229 nm
357 nm
0 0
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Answer #1

Condition of constructive interference 2 t = noil » to 497 nm 2x 1.20 Answer = 207 nm =

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