A) \[\vec{B}\times \vec{E}\]
B) \[\vec{E}\times \vec{B}\]
C) \[\vec{E}\]
D) \[\vec{B}\]
Correct Answer: B
Solution :
An electromagnetic wave is the wave composed of the oscillations of electric and magnetic fields in mutually perpendicular planes and these oscillations are perpendicular to the direction of propagation of wave. |
The direction of propagation of electromagnetic wave is given by poynting vector |
\[\vec{S}=\vec{E}\times \vec{H}=\frac{\vec{E}\times \vec{B}}{{{\mu }_{0}}}\] |
This is parallel to \[\vec{E}\times \vec{B}\] |
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