Q

A ray in air enters a glass slab. Which statements are correct? (i) Incidence angle exceeds refraction angle. (ii) Incidence angle equals emergence angle. (iii) Emergent and incident rays are parallel.

RRB Group-D 24/08/2022 / Shift-I 2022
✓ Answer: B (i), (ii) and (iii)
For oblique incidence on a parallel-sided glass slab in air, the ray bends towards the normal and emerges parallel to its initial direction with equal incidence and emergence angles.
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