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A Puddle of Water (N = 1

Question 25

Multiple Choice

A puddle of water (n = 1.33) is covered with a very thin layer of oil (n = 1.20) .How thick is the oil in the region that strongly reflects light with a wavelength of 636 nm?


A) 133 nm
B) 265 nm
C) 530 nm
D) 353 nm
E) ​286 nm

Correct Answer:

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