Question

light travels fastest through which material? ​

Answer 1

Here is the answer to your question!!

Light travels fastest in Vaccum as there is no obstacles which create hindrance to light !!!..

hope it helped

Answer 2

Answer:

Vaccum as there is no medium and obsticale which will create any hindrance to light. It is because light can travel in no medium because it is an electromagnetic wave. and we know that wave's can travel in vaccum.