In what cases does a light ray not deviate at the interface of two media?

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Solution

If we observe that light is not deviating at the surface of two media then there is two things possible
1.Refractive index of two mediums are same.
2.The light is incident normally at the surface.

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In what cases does a light ray not deviate at the interface of two media?

If we observe that light is not deviating at the surface of two media then there is two things possible1.Refractive index of two mediums are same.2.The light is incident normally at the surface.

If we observe that light is not deviating at the surface of two media then there is two things possible
1.Refractive index of two mediums are same.
2.The light is incident normally at the surface.