Question

what is total internal reflection​

Answer 1

Answer:

the complete reflection of a light ray reaching an interface with a less dense medium when the angle of incidence exceeds the critical angle.

Answer 2

Answer:

• Total internal reflection, in physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium.
• The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.