+3 votes
in JEE by kratos

Find the minimum thickness of a film with refractive index 1.33 at which light with wavelength 0.64 μm experiences maximum reflection while light with wavelength 0.40 μm is not reflected at all. The incidence angle of light is equal to 30°.

1 Answer

+5 votes
by kratos
 
Best answer

Given the equation

This means, for the smallest integer solutions

...