First slide

Nature of electromagnetic wave

Question

If $\vec{E} and \vec{B}$ are the electric and magnetic field vectors of E.M. waves then the direction of propagation of E.M. waves is along the direction of

Easy

A

$\vec{E}$
B

$\vec{B}$
C

$\vec{E} \times \vec{B}$
D

None of these

Solution

E.M. waves travels perpendicular to E and B which are also perpendicular to each other, $\vec{v} = \vec{E} \times \vec{B}$

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