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  4. If E and B represent electric and magnetic field vectors of the electromagnetic waves, then the direction of propagation of the waves will be along

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Q. If $E$ and $B$ represent electric and magnetic field vectors of the electromagnetic waves, then the direction of propagation of the waves will be along

JIPMERJIPMER 2018Electromagnetic Waves

Solution:

Direction of propagation of Electromagnetic waves is perpendicular to electric field and magnetic field. Hence direction is given by pointing
vector $\vec{S}=\vec{E}\times\vec{H}=\frac{\vec{E}\times\vec{B}}{\mu_{0}}.$