Question

If the speed of light in vaccum is 3×10^8 m/sec ,find the absolute refractive index of the medium in which light travels with the speed of 1.4×10^8 m/sec ​

Answer 1

Answer:

It is given by the ratio of speed of light in vaccum to the speed of light in a medium. So, So, the absolute refractive index of a medium is 2.14.

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Answer 2

Answer:

The speed of light in vaccum,

c=3\times 10^8\ m/s

The speed of light in a medium,

v=1.4\times 10^8\ m/s

Let n is the absolute refractive index of a medium. It is given by the ratio of speed of light in vaccum to the speed of light in a medium. So,

n=\dfrac{c}{v}\\\\n=\dfrac{3\times 10^8}{1.4\times 10^8}\\\\n=2.14

So, the absolute refractive index of a medium is 2.14.