Question

A student traces the path of a ray of light through a rectangular glass slab. On analysing the measurements which of the following conclusions is he likes to draw?​

Answer 1

Answer:

As the incident ray is parallel to the emergent ray, thus incidence angle is equal to angle of emergence i.e  ∠i=∠e

Also the ray travelling from rarer medium (air) to the denser medium (glass slab) slightly bends towards the normal after refraction, thus angle of refraction is smaller than angle of incidence  i.e  ∠r<∠i

⟹   ∠i=∠e>∠r

Explanation:

Answer 2

Given

A student traces the path of a ray of light through a rectangular glass slab. On analysing the measurements which of the following conclusions is he likes to draw?​

Answer

As the incident ray is parallel to the emergent ray, thus incidence angle is equal to angle of emergence i.e  ∠i=∠e

Also the ray travelling from rarer medium (air) to the denser medium (glass slab) slightly bends towards the normal after refraction, thus angle of refraction is smaller than angle of incidence  i.e  ∠r<∠i

⟹   ∠i=∠e>∠r

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