A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:(a)(b) 45° (c) 90° (d) 120°


(c) 90°


Explanation

When light rays fall at right angles (at 90°, i.e perpendicular to the glass block) or normally on the surface of the glass block, there is no bending of light rays; they travel straight.


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Updated on: 10-Oct-2022

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