Question

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

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

Answer 1

The correct option is D both (a) and (b)

Let us consider, in electromagnetic wave $x,y,$ and $Z$ axis are there.

By using Right Hand Rule,

$E_y\times B_z=V_x$

By using Right Hand Rule

$E_Z\times B_Y=-V_x$

So, from above two condition there is a possible of two condition there is a possibility of two pairs in which wave can propagate in +ve direction and in second condition it can propagate in -ve x-axis.

Therefore, correct option is (D)