Question

A plane electromagnetic wave propagating along $x$ direction can have the following pairs of $\vec{E}$ and $\vec{B}$

• A. $E_y$, $B_z$
• B. $E_z$, $B_y$
• C. $E_x$, $B_y$
• D. both (a) and (b)

Answer 1

Answer: (D)

both (a) and (b)

Answer 2

As electric and magnetic field vectors $\vec{E}$ and $\vec{B}$ are perpendicular to each other as well as perpendicular to the direction of propagation of electromagnetic wave. Hence options (a) and (b) are correct.