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

question 83

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 240 nm thick?

• A)467 nm
• B)562 nm
• C)587 nm
• D)480 nm

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