When total internal reflection happens at a glass-air interface
A) half the light is refracted.
B) half the light is reflected.
C) light hits the interface from the air side.
D) light hits the interface from the glass side.
E) the law of reflection ceases to hold.

Question

Quizplus · Accepted Answer

Total internal reflection occurs when light hits the interface from the denser medium (glass) towards the less dense medium (air) at an angle greater than the critical angle, causing all the light to be reflected back into the glass, not refracted.

When Total Internal Reflection Happens at a Glass-Air Interface