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A 500-Nm-Wavelength Beam of Light Illuminates a Soap Film with Air

Question 15

Multiple Choice

A 500-nm-wavelength beam of light illuminates a soap film with air on both sides and an index of refraction 1.33.If the beam of light is incident normally on the film,what is the minimum thickness of the film to make the reflected light enhanced in brightness?


A) 47.0 nm
B) 74.0 nm
C) 94.0 nm
D) 152 nm
E) 268 nm

Correct Answer:

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