Question

The direction of a ray of light incident on a concave mirror is shown by $PQ$ while direction in which the ray will travel after reflection is shown by four rays marked as $1,2,3$ and $4$ as shown in the figure. Which ray among the four rays correctly shows the direction of the reflected ray?
$[C$ is the centre of curvature and $F$ is focus$]$

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is B $2$

We know that the ray passing through focus after reflection get parallel to the principal axis.
Thus, the ray $2$ correctly represent the reflected ray.