Question

What is Total internal refraction​

Answer 1

Answer:

When a ray of light travelling in a denser medium, is incident at the surface of a rarer medium at the angle of incidence greater than the critical angle for the pair of media, the ray is totally reflected back into the denser medium. This phenomenon is called Total internal reflection.

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Answer 2

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. ... At all angles less than the critical angle, both refraction and reflection occur in varying proportions.

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