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If \(E\) and \(B\) are the electric and magnetic field vectors of an electromagnetic wave, then the direction of propagation of the wave is along the direction of

1. E
2. B
3. \(\mathbf{E} \times \mathbf{B}\)
4. None of these

Correct answer: \(\mathbf{E} \times \mathbf{B}\)

Solution

In an electromagnetic wave, the electric field and magnetic field are mutually perpendicular. The wave propagates in the direction of the vector product \(\mathbf{E} \times \mathbf{B}\).

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