Question

If $ab$ is the wavefront at time $t=0$ and $cd$ is the wavefront at time $t=t_1$. Find the direction of propagation of light.

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

We know, light travels/propagates in a direction perpendicular to the wavefront and here the wavefront is shifting towards right as the time is passing.


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