First slide
Nature of electromagnetic wave

An EM wave is propagating in a medium with a velocity v=vi^. The instantaneous oscillating electric field of this EM wave is along +y axis. Then the direction of oscillating magnetic field of the EM wave will be along


Velocity of em wave in a medium is given by 


(E^)×(B)=v^[E=Ej^( Given )]

 As i^=j^×k^, So B=Bk^

Direction of oscillating magnetic field of the em wave will be along +z direction.

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