Choose the correct answer:

On refraction through a Rectangular Glass Slab, we observe that angle of incidence and the angle of emergence are ____

On tracing a path of a ray traveling through a rectangular glass slab following observations are made:

1. The angles of emergence and incidence are nearly equal.
2. The angle of refraction will be smaller than the angle of incidence when light moves from a rarer to a denser optical medium.
3. The lateral displacement will be constant for all incidence angles.
4. When light moves from an optically rarer to an optically denser material, it will bend toward the normal.