Question

refractive index ratio of three medium
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Answer 1

Answer:

Explanation:

The absolute refractive index is defined as a ratio of the speed of light in vacuum and in selected medium. Generally, the refractive index depends on the wavelength of incident light. Relative refractive index is defined as a ratio of speeds of light in two different media

Answer 2

Answer:

The refractive index of a medium is defined as the ratio of speed of light in vacuum to that of speed of light in medium.

Explanation:

Refractive Index = Speed of light in vacuum / Speed of light in medium

300 000 Km / sec / 1.33

Refractive Index = Speed of light in vacuum / Speed of light in medium

Example: The Speed of light in vacuum is 300 000 Km/s and the speed of light in air = 200 000Km/s

Find the refractive index of the glass.

Refractive Index = Speed of light in vacuum / Speed of light in medium

300 000 Km/sec / 200 000 Km/sec = 1.5