Question
What is absolute refractive index? On what factors does it depend ?
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Answer
$\rightarrow$ The refractive index of a given medium with respect to vacuum is called its absolute refractive index.
$n =\frac{c}{v}$
$\rightarrow$ It is also equal to the ratio of speed of light in vacuum to speed of light in given medium.
$\rightarrow$ Refractive index is unitless.
$\rightarrow$ Dimensional formula: $M^0L^0T^0$
$\rightarrow$ Value of refractive index of any medium depends on type of medium, temperature and wavelength of light.
$\rightarrow$ The refractive index of a medium and the wavelength of light in the same medium are inversely proportional to each other. $\left(n \propto \frac{1}{\lambda}\right)$
$n =\frac{c}{v}$
$\rightarrow$ It is also equal to the ratio of speed of light in vacuum to speed of light in given medium.
$\rightarrow$ Refractive index is unitless.
$\rightarrow$ Dimensional formula: $M^0L^0T^0$
$\rightarrow$ Value of refractive index of any medium depends on type of medium, temperature and wavelength of light.
$\rightarrow$ The refractive index of a medium and the wavelength of light in the same medium are inversely proportional to each other. $\left(n \propto \frac{1}{\lambda}\right)$
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