$(a)$ Write any three differences between concave and convex mirror.
$(b)$ Draw ray diagram to show what happens to a ray of light after reflection from a convex mirror,if it
$(i)$ is incident parallel to principal axis.
$(ii)$ incident at the pole.

(N/A) Differences between concave and convex mirror:
$1$. Concave mirror: The reflecting surface is curved inwards. Convex mirror: The reflecting surface is curved outwards.
$2$. Concave mirror: It can form both real and virtual images. Convex mirror: It always forms virtual,erect,and diminished images.
$3$. Concave mirror: It is a converging mirror. Convex mirror: It is a diverging mirror.
$(b)$ Ray diagrams for a convex mirror:
$(i)$ $A$ ray of light incident parallel to the principal axis appears to diverge from the principal focus $(F)$ after reflection.
$(ii)$ $A$ ray of light incident at the pole $(P)$ is reflected back such that the angle of incidence equals the angle of reflection $(i = r)$ with respect to the principal axis.