Question

Explain Fermat's principal of least time without taking help from Google/internet/book or any source. whatever you know about this topic just give an answer or if you don't know the answer them please don't answer ​

Answer 1

Answer:

Fermat's principle states that “light travels between two points along the path that requires the least time, as compared to other nearby paths.” From Fermat's principle, one can derive (a) the law of reflection [the angle of incidence is equal to the angle of reflection] and (b) the law of refraction [Snell's law].