Question

find the speed of light in diamond if it's refractive is 2.5 ( speed of light in vaccume is 3×10 m/s​

Answer 1

Answer:

Let the speed of light in Diamond be'x'm/sec. Therefore, the speed of light in Diamond=1.2×10⁸m/sec.

Answer 2

Answer:

1.2*10^8 m/s

Explanation:

we know that refractive index 'n'=c/v

where 'c' is speed of light and 'v' is speed of light in respective medium

so we need to find 'v' here,

so v=c/n

      =(3*10^8)/2.5

       =1.2*10^8 m/s

which also shows speed of light is slower in diamond than in air bcz its more denser