Question

plzz answer this as asap​

Answer 1

1. incidence ray and reflected ray

2. normal

Answer 2

1. When light undergoes refraction through a glass slab, the $\bold{\underline {incident}}$ Ray and $\bold{\underline {emergent}}$ Ray are parallel to each other.

2. The angle of incidence and the angle of emergence are of $\bold{\underline {equal}}$ measures.