Question

At the interface of two transparent mediums at the point of incidence, the incident ray, the refracted ray and the normal all lie in _____.

• A. Different plane
• B. Same plane
• C. Depends on the medium
• D. Insufficient data

Answer 1

The correct option is B

Same plane

All three of these lie on the same plane. This is one of the results of Snell's law i.e. the first law of refraction.