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Suppose the green plane wave (1o
= 500.00 nm) in air (n = 1.00) falls
at 10.00° on the surface of a film of water (n = 1.33) floating on window glass
(n = 1.52). What minimum non-zero thickness (in nanometers, down to two
decimal points) should the film have to reflect the light as strongly as possible?

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