The thickness of a soap film (n = 1.46) is 300 nm. What wavelength of – McqOptions

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1.	The thickness of a soap film (n = 1.46) is 300 nm. What wavelength of light in the visible region can be used to constructively reflect off the film?
A.	620 nm
B.	584 nm
C.	628 nm
D.	410 nm
Answer» C. 628 nm

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