Question

why light travels fastest in the vaccum? please tell it is urgent​

Answer 1

Answer:

because there is no obstruction in vaccum for the propagation of light

Answer 2

Answer:

i hope it is help full ;

Explanation:

Why does light travel faster in a vacuum?

(One way to change the magnetic field at a point is to hold a magnet there, then wiggle it back and forth.) Unlike the wave in the rope, these waves actually travel away from us in all directions. It turns out that in a vacuum, for example in outer space, these waves travel at exactly the speed of light!