absolute refractive index can never be less than one .
give reason
Answers
Answer:
absolute refractive index can never be less than one . As absolute refractive index is ratio of speed of light in vacuum to that in the given medium, we can say it is alwaysgreater than one. This is because light travels with the highest speed in vacuum.
It is because the speed of light in the vacuum is higher than the speed of the light in a medium, so there ratio is always greater than unity.
Explanation:
The absolute refractive index is usually defined as the ratio between the speed of light (in a vacuum) to the speed of light (in any medium).
It is conventional that the speed of light in any particular medium is always lesser than it is in a vacuum.
Due to this condition, the ratio between them remains more than the value of 1. Therefore, the absolute refractive index of light can no way be less than the value of unity.
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