Answer:
Explanation:
We can calculate the maximum wavelength in which the thin film presents destructive interference. Below this wavelength, there are no colors reflected, and the thin film looks dark.
The max wavelength is given by the expression:
[tex]\lambda=\frac{2nd}{m-\frac{1}{2}}[/tex]
where m is the order of the interference pattern, n is the refractive index and d is the thin of the film. By replacing we obtain:
[tex]\lambda=\frac{2(1.52)(465nm)}{1-\frac{1}{2}}=2872.1nm[/tex]
below this values no other colors are reflected.
hope this helps!!
