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Asked Nov 16, 2019

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Ch 27, problem 9

Light of wavelength 580 nm (in vacuum) is incident perpendicularly on a soap film (*n* = 1.35) suspended in air. What are the two smallest nonzero film thicknesses (in nm) for which reflected light undergoes constructive interference? Let **(a)** be the smaller of the two values. Let (b) be the larger of the two values.

Step 1

The condition for the constructive interference is

Step 2

(a) The smallest non-zero film thickness...

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