Question

Define
lateral displacement in a rectangular glass slab
Draw a well labelled diagram​

Answer 1

Answer:

lateral displacement is the distance between the emergent Ray and the incident ray had the incident ray not refracted.

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Answer 2

Answer:

Lateral displacement: Due to refraction of light through two parallel sided glass block, the angle of incidence is equal to the angle of emergence, so the incident ray is parallel to the emergent ray ( i.e. they are in the same direction) but they are not along the same line.