Question

DEFINE fermat's principle​

Answer 1

Explanation:

Fermat's principle, also known as the principle of least time, is the link between ray optics and wave optics. In its original "strong" form, Fermat's principle states that the path taken by a ray between two given points is the path that can be traversed in the least time.

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Answer 2

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the law that the path taken by a ray of light in going from one point to another point will be the path that requires the least time is called fermats principle.