question_answer

An electromagnetic wave in vacuum has the electric and magnetic field \[\vec{E}\] 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                                                           [AIEEE 2012]

A) \[\vec{X}||\vec{B}\] and \[\vec{k}||\vec{B}\times \vec{E}\]                     

B) \[\vec{X}||\vec{E}\] and \[\vec{k}||\vec{E}\times \vec{B}\]

C) \[\vec{X}||\vec{B}\] and \[\vec{k}||\vec{E}\times \vec{B}\]

D) \[\vec{X}||\vec{E}\] and \[\vec{k}||\vec{B}\times \vec{E}\]

Correct Answer: B

Solution :

[b]