What is reflecting prism......?
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Prisms are sometimes used for the internal reflection at the surfaces rather than for dispersion. If light inside the prism hits one of the surfaces at a sufficiently steep angle, total internal reflection occurs and all of the light is reflected. This makes a prism a useful substitute for a mirror in some situations.
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- A prism having an angle of 90∘ between its two refracting surfaces and the other two angles each equal to 45∘ is called total reflecting prism because the light incident normally on any of the faces, suffers total internal reflection inside the prism.
- noun. Optics. a transparent solid body, often having triangular bases, used for dispersing light into a spectrum or for reflecting rays of light. Geometry. a solid having bases or ends that are parallel, congruent polygons and sides that are parallelograms.
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