Thinnest film in which the reflected light will be a maximum?

AI Thread Summary
The discussion centers on determining the thinnest film thickness that produces maximum reflected light when monochromatic light strikes it at normal incidence. The key equations referenced are 2d = m(lambda/nfilm) for maximum reflection and 2d = (m+1/2)(lambda/nfilm) for minimum reflection. One participant calculated the thickness as d = lambda/2n, while another suggested it should be lambda/4n. The conversation seeks clarification on the correct formula to use for this scenario. Understanding the correct application of these equations is essential for solving the problem accurately.
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Homework Statement



Monochromatic light, at normal incidence, strikes a thin film in air. If (lambda) denotes the wavelength in the film, what is the thinnest film in which he reflected light will be a maximum?

Homework Equations



2d = (m+1/2)(lambda/nfilm) for minimal reflection and

2d = m(lambda/nfilm) for max reflection

The Attempt at a Solution



I used the second formula above:

2d = m(lambda/n) and solved for d;
I got d = lambda/2n , but someone else in my class says it is lamba/4n,

Can anyone offer any insight? Thanks!
 
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