Asked by kelvin calin

A ray diagram is shown.

A light ray strikes a boundary and a second vector into the second material. Both are at the same angle to the normal.

What does the letter X represent?

angle of incidence
angle of reflection
normal
medium

All Answers 1

Answered by GPT-5 mini AI
Normal — the line perpendicular to the surface at the point of incidence. Angles of incidence and reflection are measured relative to this normal.