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A) A light ray is incident normally on one face of a triangular prism of glass as shown below. What is the minimum index of refraction of the glass if the light ray is to be totally internally reflected at the slanted surface as shown. Tip: Angles of incidence and reflection are measured relative to the normal to the interface. B) In the index of refraction of the glass is too small some light will be reflected and some light will be refracted at the slanted interface. Which of the numbered suggested refracted rays in the sketch below best represents the actual path of the refracted ray at this interface? Briefly justify your answer. K

A) A light ray is incident normally on one face of a triangular prism of glass as shown below. What is the minimum index of refraction of the glass if the light ray is to be totally internally reflected at the slanted surface as shown. Tip: Angles of incidence and reflection are measured relative to the normal to the interface. B) In the index of refraction of the glass is too small some light will be reflected and some light will be refracted at the slanted interface. Which of the numbered suggested refracted rays in the sketch below best represents the actual path of the refracted ray at this interface? Briefly justify your answer. K

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A) A light ray is incident normally on one face of a triangular prism of glass as shown below. What is the minimum index of refraction of the glass if the light ray is to be totally internally reflected at the slanted surface as shown. Tip: Angles of incidence and reflection are measured relative to the normal to the interface. B) In the index of refraction of the glass is too small some light will be reflected and some light will be refracted at the slanted interface. Which of the numbered suggested refracted rays in the sketch below best represents the actual path of the refracted ray at this interface? Briefly justify your answer. air 11 glass 45" air 450
Transcribed Image Text:A) A light ray is incident normally on one face of a triangular prism of glass as shown below. What is the minimum index of refraction of the glass if the light ray is to be totally internally reflected at the slanted surface as shown. Tip: Angles of incidence and reflection are measured relative to the normal to the interface. B) In the index of refraction of the glass is too small some light will be reflected and some light will be refracted at the slanted interface. Which of the numbered suggested refracted rays in the sketch below best represents the actual path of the refracted ray at this interface? Briefly justify your answer. air 11 glass 45" air 450
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