Question

What is refaractive index of diamond if refractive index of absolute diamond is 2.42 and absolute refractive index of glass is 1.50

Answer 1

Absolute index is a is the index of substance with respect to speed of air(3*10^8)

So the speed of light in diamond =speed of light in air divide by absolute reflective index of diamond=1.2*10^8

Now speed of light in glass

= speed of light in air divide by absolute refractive index of glass=2*10^8

Now the refractive index of diamond with respect to glass is=1.2*10^8 divide by 2*10^8=0.62