Question

refrective index of diamond is 2.4 and refractive index of diamond with respect to glass is 1.6 . the speed of light in glass​

Answer 1

Answer:

Two lakhs kilometer per second.

Answer 2

Answer:

Velocity of light in glass is  $\frac{2}{3} c$ .

Explanation:

Given,

Refrective index of diamond,$\mu_d$ =  2.4

and refractive index of diamond  with respect to glass, $\mu_dg$ = 1.6

   As,       $\mu_dg =1.6$

           →  $\frac{\mu_d}{\mu_g}$  =   1.6

           → $\mu_g = \frac{\mu_d}{1.6}$

                     $= \frac{2.4}{1.6}$ $= \frac{3}{2}$

Again,we know that,

                  Refractive index, ($\mu$) = $\frac{c}{v}$     [c → velocity of light in free space]

∴Velocity of light in glass ,($v_{g}$) = $\frac{c}{\mu_g}$

                                                   = $\frac{2}{3} c$         [$c = 3 * 10^8 \ m/s$]