- #1
johnj7
- 27
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Homework Statement
A soap bubble n=1.33 is floating in air. If the thickness of the bubble wall is 115 nm, what is the wavelength of the light that is most strongly reflected
Homework Equations
2nt=(m+0.5)(lambda)
The Attempt at a Solution
most strongly reflected = constructive interference
t=115 nm
lambda = unknown
n = 1.33
assumption m=0
plug and chug to get lambda
so I got the answer, but I was confused on why we make the assumption that m=0, couldn't m technically be any integer number? Do we just automatically assume that m=0 for "most strongly reflected" if a specific desired wavelength is not given?
thank you!