Physics-
General
Easy

Question

If epsilon subscript 0 end subscript and mu subscript 0 end subscript represent the permittivity and permeability of vacuum and epsilon and mu represent the permittivity and permeability of medium, then refractive index of the medium is given by

  1. square root of fraction numerator mu subscript 0 end subscript epsilon subscript 0 end subscript over denominator mu epsilon end fraction end root  
  2. square root of fraction numerator mu epsilon over denominator mu subscript 0 end subscript epsilon subscript 0 end subscript end fraction end root  
  3. square root of fraction numerator mu over denominator mu subscript 0 end subscript epsilon subscript 0 end subscript end fraction end root  
  4. square root of fraction numerator mu subscript 0 end subscript epsilon subscript 0 end subscript over denominator mu end fraction end root  

The correct answer is: square root of fraction numerator mu epsilon over denominator mu subscript 0 end subscript epsilon subscript 0 end subscript end fraction end root


    Refractive indexequals fraction numerator c subscript 0 end subscript over denominator c end fraction equals fraction numerator 1 divided by square root of mu subscript 0 end subscript epsilon subscript 0 end subscript end root over denominator 1 divided by square root of mu epsilon end root end fraction
    equals square root of fraction numerator mu epsilon over denominator mu subscript 0 end subscript epsilon subscript 0 end subscript end fraction end root

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