Question

Observe the refraction and letral displacement of light rays incident obliquely on a glass slab​

Answer 1

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When a ray of light (PQ) incident on the face AB of glass slab, then it bends towards the normal since refraction takes place from rarer to denser medium. ... The emergent ray is laterally deviated from its original path (incident ray) by a distance d = t sec r sin (i – r).