What is meant by ray optics or geometrical optics? - Vidyadip

Question

What is meant by ray optics or geometrical optics?

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Answer

The formation of
1. shadows, and
2 images by mirrors and lenses can be explained by assuming that light propagates in a straight line in terms of rays. The study of optical phenomena under this assumption is called ray optics. It is also called geometrical optics as geometry is used in this study.

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