Question

"snell's law is not valid when light is incident normally on the surface separating the two media". Why?​

Answer 1

Answer:

Hope your prepration is going well. 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.

Explanation:

hope it is helpful ✌

Answer 2

$this \: answer \: correct$