Justify electromagnetic wave is said to be transverse wave.

Justify electromagnetic wave is said to be transverse wave. 
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Answer :

Transverse electromagnetic wave:-

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The electromagnetic waves are oscillations which propagate through free space. In electromagnetic waves the direction of electric field, magnetic field & propagation are mutually perpendicular. Hence electromagnetic waves are called as transverse wave. The polarization of a plane EM wave is simply the orientation of the electric field vector with respect to the surface (i.e. looking at the horizon) 

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