What Minimum Thickness of Oil (N = 1

question 42

Multiple Choice

What minimum thickness of oil (n = 1.50) on the surface of water (n = 1.33) would give constructive interference for 550 nm light at normal incidence?

• A) 78.0 nm
• B) 80.0 nm
• C) 92.0 nm
• D) 183 nm
• E) 275 nm

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