Question

speed of light in vaccum/ speed of light in medium​

Answer 1

Answer:

299,792,458 metres/second

The speed of light in a vacuum is 299,792,458 metres/second (though it is less in a transparent medium such as air, water or glass, depending on the refraction index).

Explanation:

hope it's helpful

Answer 2

Answer:

it is known as refraction and is the formula of it

hope it helps u buddy...