A plane electromagnetic wave propagating
Question:

A plane electromagnetic wave propagating along y-direction can have the following pair of electric field $(\overrightarrow{\mathrm{E}})$ and magnetic field $(\overrightarrow{\mathrm{B}})$

components.

1. $\mathrm{E}_{\mathrm{y}}, \mathrm{B}_{\mathrm{y}}$ or $\mathrm{E}_{\mathrm{z}}, \mathrm{B}_{\mathrm{z}}$

2. $\mathrm{E}_{\mathrm{y}}, \mathrm{B}_{\mathrm{x}}$ or $\mathrm{E}_{\mathrm{x}}, \mathrm{B}_{\mathrm{y}}$

3. $\mathrm{E}_{\mathrm{x}}, \mathrm{B}_{\mathrm{z}}$ or $\mathrm{E}_{z}, \mathrm{~B}_{\mathrm{x}}$

4. $E_{x}, B_{y}$ or $E_{y}, B_{x}$

Correct Option: , 3

Solution: