A Thin Layer of Oil (N = 1

question 29

Multiple Choice

A thin layer of oil (n = 1.25) is on top of a puddle of water (n = 1.33) .If normally incident 500-nm light is strongly reflected,what is the minimum nonzero thickness of the oil layer?

• A) 200 nm
• B) 250 nm
• C) 100 nm
• D) 400 nm
• E) 150 nm

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