Thin Film Constructive Interference
A thin film of oil (n = 1.45) floats on water (n = 1.33). Light incident from air (n = 1.00) reflects from both the top and bottom surfaces of the film. To produce constructive interference for the reflected light, what is the minimum required thickness of the oil film?
A
λ/n
B
3λ/4n
C
λ/2n
D
λ/4n
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