Question

When a light ray is incident normally at the boundary between two media, it .................it`s direction.  A)Can change B)Partially change C)Does not change D)Mostly change
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Answer 1

Answer:

Can change

Explanation:

The amount of bending of a light ray as it crosses a boundary between two media is dictated by the difference in the two indices of refraction. When light passes into a denser medium, the ray is bent toward the normal. Conversely, light emerging obliquely from a denser medium is bent away from the normal.