Question

Explain the phenomenon of refraction by a
rectangular glass slab.​

Answer 1

Answer:

When light rays travelling through air enters glass slab, they get refracted and bend towards the normal. ... Since the ray of light I know travelling from denser medium to rarer medium, it bends away from the normal. In this case incident ray and the emergent ray are parallel to each other.

Answer 2

Answer:

The refracted ray is incident obliquely on the second parallel surface inside the rectangular glass slab, i. e. glass-air interface (AB) and after refraction, it moves away from the normal. These refractions at both the surfaces obey the laws of refraction (Refer to basic building concept).

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