What Is the Minimum Thickness of a Glycerin Film (N

question 29

Multiple Choice

What is the minimum thickness of a glycerin film (n = 1.47) on which light of wavelength 684 nm shines that results in constructive interference of the reflected light? Assume the film is surrounded front and back by air.

• A)233 nm
• B)116 nm
• C)251 nm
• D)503 nm
• E)126 nm

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