Question

The energy of the wave travels in a direction _______ to the wavefront.

• A. tangential
• B. lateral
• C. perpendicular
• D. parallel

Answer 1

The correct option is C perpendicular

As we know that the direction of propagation of a light wave is perpendicular to the wavefront, and the wave carries energy, so the energy of the wave travels in a direction perpendicular to the wavefront.

Hence, option $\left(\text{C}\right)$ is correct.