Question

When a thin layer of alcohol (nalcohol = 1.39) is poured over a glass plate (nglass = 1.52), reflected monochromatic light from the plate is enhanced when = 640 nm and eliminated when = 512 nm. Determine the minimum possible thickness of the alcohol layer such that the above conditions are simultaneously met. Assume that nair = 1.0 and that the light is incident perpendicular to the plate.

Answer 1

4.6x10^-7 m thickness

Step-by-step explanation:

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