If $\vec{E}$ and $\vec{B}$ are the electric and magnetic field vectors of an electromagnetic wave, then the…

If $\vec{E}$ and $\vec{B}$ are the electric and magnetic field vectors of an electromagnetic wave, then the direction of propagation of the electromagnetic wave is
  1. along the direction of $\overrightarrow{\mathrm{E}}$
  2. along the direction of $\overrightarrow{\mathrm{B}}$
  3. parallel to the direction of $\overrightarrow{\mathrm{E}} \times \overrightarrow{\mathrm{B}}$
  4. perpendicular to the direction of $\overrightarrow{\mathrm{E}} \times \overrightarrow{\mathrm{B}}$

Solution

The direction of propagation of the electromagnetic wave is perpendicular to the direction of $\overrightarrow{\mathrm{E}} \times \overrightarrow{\mathrm{B}}$.

Asked in: AP EAMCET 2023 (16 May Shift 1)

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