Question

Define :angle of emergence

Answer 1

The angle of emergence:

1. The angle of emergence is the angle of the light ray coming out of a medium perpendicular to the surface at the point of emergence.
2. The angle of emergence is the angle at which light emerges from a medium (for example a glass slab with parallel sides like a prism).
3. The first medium is air, the middle medium is a parallel-sided glass slab and the final medium is air
4. In the below diagram, The angle between the emergent ray ($FS$) and the normal line $\left(M\right)$ is called the angle of emergence $\angle e$