Question

(ii) In refraction of light through a glass slab, the directions of the incident
ray and the refracted ray are
(a) perpendicular to each other (b) non-parallel to each other
(C) parallel to each other
(d) intersecting each other

*please explain your answer​

Answer 1

Answer:

Parallel to each other

Explanation:

As the light ray passes through the glass slab the light ray is refracted when it passes from rarer medium(air) to denser medium (glass slab) and bends in the opposite side of the direction or bend away from the normal. But when it refracts again from denser medium (glass slab) to rarer medium (air) it again bends towards the normal means in the original direction. Therefore , the incident ray and refracted ray are parallel.