An EM wave from air enters a medium.The electric fields are
in air and
in medium, where the wave number k and frequency ν refer to their values in air. The medium is non-magnetic. If
and
refer to relative permittivities of air and medium respectively, which of the following options is correct ?
As we learnt that
Speed of light formula in vacuum -
c=2.99793 X m/s
- wherein
c = Speed of light in vacuum
= Permeability of vacuum
= Permittivity of vacuum
(where v= speed in medium and c=speed of light in air)
For non magnetic medium;
Option 1)
This is incorrect
Option 2)
This is incorrect
Option 3)
This is incorrect
Option 4)
This is correct
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