Question

light always selects the path which takes least time to travel.this was first given by........................​

Answer 1

Answer:

hey there here is your answer:-

Pierre de Fermat..

hope it helps you!!!!

Answer 2

Answer:

Fermat's Principle: Light follows the path of least time. Of course the straight line from A to B is the shortest time, but suppose it has a single reflection.

The principle states that the path taken between two points by a ray of light is the path that can be traversed in the least time. This principle is sometimes taken as the definition of a ray of light.