Question

enlist the difference between refraction through a glass slab and refraction through a prism .​

Answer 1

QUESTION

Write the difference between refraction through a glass slab and refraction through a prism .

ANSWER

After refraction at two parallel faces of a glass slab, the ray of light emerges in a direction parallel to the incident ray on the slab. Whereas  in a prism a ray of light suffers two refractions on passing through a prism and hence deviates through a certain angle from its original path.