define refractive index and absolute refractive index?
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Refractive index is defined as ratio of sine of angle of incidence to sine of angle of refraction. It is denoted by n or μ. Thus, refractive index is given by, Absolute refractive index: When the light is going from vacuum to another medium, then the value of refractive index is called the absolute refractive index.
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⇝rєƒrαcτivє iท∂єx:-
Refractive Index is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density.
n = Refractive index
c = Speed of light
v = Phase velocity of light
⇝คЪรσłuтε яεƒяคcт¡vε:-
Absolute refractive index of a medium is defined as the ratio of the velocity of light in vacuum to the velocity of light in the medium.
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