Multiple Choice
What wavelength monochromatic source in the visible region (390 to 710 nm) can be used to constructively reflect off a soap film (n = 1.46) in air if the film is 70.0 nm thick?
A) 558 nm
B) 430 nm
C) 450 nm
D) 409 nm
Correct Answer:

Verified
Correct Answer:
Verified
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