What Is the Minimum Thickness of a Soap Bubble Film

question 45

Multiple Choice

What is the minimum thickness of a soap bubble film with refractive index 1.38 that results in a constructive interference in the reflected light if this film is illuminated by a beam of light of wavelength 610 nm?

• A)222 nm
• B)111 nm
• C)333 nm
• D)444 nm
• E)555 nm

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