Answer to Question #152475 in Optics for Himangshu khatiwara

Question

Which path should the lifeguard follow to reach the drowning person in minimum time?

Answer 1

The lifeguard must take the optimal path that minimizes the time he requires to reach the drowning person.This statement closely follows Fermat's principle which states that if a light is travelling between any two points it always takes the path that requires the least time of travel.