Question

The ratio of contributions made by the electric field and magnetic field components to the intensity of an $EM$ wave is,

• A. $c:1$
• B. $c^2:1$
• C. $1:1$
• D. $\sqrt{c}:1$

Answer 1

The correct option is C $1:1$

Intensity of a wave is proportional to the square of its amplitude.
In an electromagnetic wave, the amplitudes of both electric and magnetic field vectors are equal.

Hence, $\left(C\right)$ is the correct answer.