Question

the refractive indices of water and glass are 4 by 3 and 3 by 2 respectively find the speed of light in each​

Answer 1

Answer:

Refractive index (μ) = $\frac{c (velocity if light in vacuum)}{v (velocity of light in that medium)}$

In glass,

v = c/μ_glass

v = ($\frac{3*10^8}{3/2}$) = 2 x $10^{8}$ m/s

In water,

v = c/μ_water

v = ($\frac{3*10^8}{4/3}$) = 2.25 x $10^{8}$ m/s

Answer 2

Answer:

refractive index is very important to CBSE BOARD