The refracting angle of prism of refractive index 1.4 is 60° .At what angle should a light ray be incident at the first face of the prism so that it emerges at the second face just parallel to first face.
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Closed shapes or figures in a plane with three or more sides are called polygons. Alternatively, a polygon can be defined as a closed planar figure that is the union of a finite number of line segments. In this definition, you consider closed as an undefined term. The term polygon is derived from a Greek word meaning “many‐angled.”
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