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
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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
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