The electric field of plane electromagnetic wave in vacuum is represented by $\vec{E}_x = 0;\vec{E}_y = 0.5 cos[2\pi × 10^8(t -x/c)]\vec{E}_z = 0 $
What is the direction of propagation of electromagnetic waves?
Answer & explanation
Correct answer: option 3
Equation second shows that the electromagnetic wave travels along the positive x-axis