what is absolute refractive index?
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a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction) .
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When a light ray is passed from vaccum (or air) to an object then it is called absolute refractive index of the object.
For eg. if a light ray passes from air to glass slab then the refractive index will be air n glass = speed of light in
For eg. if a light ray passes from air to glass slab then the refractive index will be air n glass = speed of light in
Diyaa08:
speed of light in air/ speed of light in glass
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