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191. Total reflection can occur if:A. Light passes from a denser medium to a less dense oneB. Light passes from a less dense medium to a denser oneC. Light passes from a more refractive medium (higher refractive index) to a less refractive medium (lower refractive index)D. The second medium is perfectly absorbentE. Light passes from a less refracting medium (with a lower refractive index) to a more refracting medium (with a higher refractive index)

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