Question

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What is total internal reflection?​

Answer 1

Answer:

good night

Explanation:

when the incident ray is greater than critical angle then reflected ray returns back into the same medium this phenomenon is known as TIR

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. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.