Here a light ray (in red) is incident on the point A in such a way that it is collinear with AB, and the indices of refraction are as mentioned in the figure. So my question is where will the light ray go?
Here is what I thought
- If the ray goes towards the medium with refractive index n3, then as n3 < n2, it will tend to go towards n1.
- But if the ray goes towards n1, then as n1>n2, it will tend to go towards n3.
Therefore, I think that the ray will trace the line segment AB. But then what will happen at the point B??
P.S. Here, ni means the medium with the refractive index as (mu)i