Question

When light undergoes refraction through a glass slab,the...........ray and .............ray are parallel to eachother

Answer 1

When light undergoes refraction through a glass slab, the $\textbf{incident }$ray and$\textbf{ emergent }$ray are parallel to each other.

Answer 2

Hello Buddy here is ur answer✍️✍️✍️ the incident ray and emigrant ray are parallel to each other.