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An electromagnetic wave in vacuum has the electric and magnetic fields $\vec{E} and \vec{B}$ , which are always perpendicular to each other. The direction of polarization is given by $\vec{X}$ and that of wave propagation by $\vec{k}$ . Then :

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X→∥E→ and k→∥E→ x B→

X→∥B→ and k→∥E→ x B→

X→∥E→ and k→∥B→ x E→

X→∥B→ and k→∥B→ x E→

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detailed solution

Correct option is A

X¯∥E¯ and k¯∥E¯ x B¯

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An electromagnetic wave in vacuum has the electric and magnetic fields E→ and B→, which are always perpendicular to each other. The direction of polarization is given by X→ and that of wave propagation by k→. Then :

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Ready to Test Your Skills?

free study material

An electromagnetic wave in vacuum has the electric and magnetic fields $\vec{E} and \vec{B}$ , which are always perpendicular to each other. The direction of polarization is given by $\vec{X}$ and that of wave propagation by $\vec{k}$ . Then :