Question

Under what conditions does total internal reflection occur

Answer 1

Answer:

Two Requirements for Total Internal Reflection

TIR only takes place when both of the following two conditions are met: the light is in the more dense medium and approaching the less dense medium. the angle of incidence is greater than the so-called critical angle.

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Answer 2

Answer:

Explanation:

1. When the angle of incidence is greater than the critical angle of the substance

2. Ray is travelling from optically denser medium to optically rarer medium.