What Wavelength Monochromatic Source in the Visible Region (390 to 710

question 5

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) if the film is 108 nm thick?

• A) 620 nm
• B) 579 nm
• C) 631 nm
• D) 585 nm
• E) ​566 nm

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