Two thin layers of material with different indices of refraction are coated on a glass plate. The outer first material has n1 = 1.404, the inner second material has n2 = 1.176, and the glass has nglass = 1.62 . If light is incident from air on the first layer, what is the phase change relative to that of the first layer reflection for light that reflects from the glass?
a. 180°
c. 360°
b. 540°
d. 0°
D
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