Question

A ray of light is incident on an interface separating two media along the normal to the interface. The angle between the incident ray and refracted ray is equal to:

• A. $$0^o$$
• B. $$45^o$$
• C. $$90^o$$
• D. $$30^o$$

Answer 1

Answer:

$$0^o$$

When light is incident along the normal to an interface, it does not bend, so the angle between the incident and refracted rays is 0°. Light passing from a less dense to a more dense medium bends toward the normal. Light passing from a more dense to a less dense medium bends away from the normal. Light passing along the normal does not bend at the interface between two media of differ- ent density