explain total internal refraction in detail.
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internal reflection is the phenomena which occurs when a propagated wave strikes a medium boundary at an angle larger than a particular critical angle with respect to normal to the surface .
the light ray must be travel from denser to rarer medium
the light ray must be travel from denser to rarer medium
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Total internal reflection refers to the complete reflection of a ray of light within a given medium from the surrounding surface. Here, the ray of light continues to be reflected within the medium (glass, water etc.) without being refracted off.
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