Question

If the speed of light in vacuum is 3 X 1000000000 m/s . Find the absolute refractive index of a medium in which light travels with a speed of 1.4 X 1000000000 m/s

Answer 1

The absolute refractive index of a medium is written as (n) ..

n= c/v ..

where c= speed of light in air or vacuum. .

v= speed of light in ( X) medium .. ( where X is known to be any medium ) .

n= 3×100 000 000 m/s ... / 1.4× 100 000 000. m/ s .

= 2.14 × 100 000 000 m / sec