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

1.	In what cases does a light ray not deviate at the interface of two media?
Answer» 1. When a light ray incident is perpendicular to the interface of surface, it does not undergo deviation. 2. When a light ray incident is more than critical angle, it does not undergo deviation (refraction) but it undergoes reflection to come back into the original medium.

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

Answer»

1. When a light ray incident is perpendicular to the interface of surface, it does not undergo deviation.

2. When a light ray incident is more than critical angle, it does not undergo deviation (refraction) but it undergoes reflection to come back into the original medium.

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

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