If a ray of light enters from a rarer medium to a denser medium at zero angle of incidence, it would
reflect back.
go straight.
turn towards right.
bend at 45°.
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-1 – 2021
When a ray of light is incident normally (at zero angle of incidence) on the boundary between two different media, it passes from one medium to the other without changing its direction, regardless of whether it is moving from a rarer to a denser medium or vice versa. The angle of incidence is the angle between the incident ray and the normal to the surface. If this angle is zero, the angle of refraction (the angle between the refracted ray and the normal) will also be zero, as predicted by Snell’s Law (n1 sinθ1 = n2 sinθ2).