The refractive index of a medium of dielectric constant 2 and relative permeability 1.28 is
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Answer:
Loght is an electromagnetic wave, and Maxwell showed that light [math]c[/math] travels at the EM velocity [math]U/\sqrt{\epsilon\mu}[/math]. SI sets U=1, but in CGS, U is a derived constant with units etc, because [math]\epsilon[/math] and [math]\mu[/math] are both set to unity. It is the comparison between the values of c and U that set the electromagnetic theory of light in motion.
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Given:
- Dielectric constant
- Relative permeability
To Find:
- Refractive index of the medium
Solution:
Relation between refractive index, relative permittivity and the relative permeability is given by
Putting the value of all these
we get,
Thus, Refractive index of the medium is
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