Question

When a light ray suffers reflection, at the interface between air and glass,the change of phase in reflected wave is equal to

A)Zero
B) Sigma/4
C)Sigma/2
D)Sigma

Answer 1

Answer:

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Explanation:

Now, come to the question, when a light wave suffers reflection at the interface from air to glass, it experiences a change in phase because the refractive index of glass is more than air, as we know that air is a rarer medium and glass is denser medium. So, the change in phase of the reflected wave is $\pi $.