Question

when does snell law fail​

Answer 1

Answer:

when light incidents on the surface of separation of the two media normally or through the normal. It happens as when light incidents through the normal, the angle of incidence is equal to zero. Therefore the angle of Refraction is also zero.

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Answer 2

Explanation:

Snell's Law of Refraction fail when light incidents on the surface of separation of the 2 media normally or through the normal. It is because when light incidents through the normal, the angle of incidence is equal to zero. Therefore the angle of Refraction is also zero.