Question

what is total internal reflection​

Answer 1

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.

Explanation:

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Answer 2

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