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What happens to internal reflection if the amount of reflected light increases?

Answer 1

If there is total internal reflection , then the greater amount of light will also be totally reflected.

This may seem like a short answer, but there's nothing more to it. There is no such thing as 'overflow'. More light means more gets reflected.

Of course there will always be some absorbtion loss in the medium, which will be transformed to warmth. And we can imagine, that there is a certain amount of light-to-heat conversion that might do damage.

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Answer 2

Olivia Askew

If the amount of reflected light increases, internal reflection remains the same. The phenomenon of internal reflection is determined by the angle of incidence and the refractive indices of the materials involved, rather than the amount of light being reflected. As long as the conditions for total internal reflection are met, such as a sufficiently high angle of incidence and a lower refractive index medium, internal reflection will occur regardless of the intensity of the incident light.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.