How does a convex mirror effect light rays?

Hint : The convex mirror is curved, where the reflective surface bulges out towards the light source and the bulging out surface reflects the light outwards and, thus not used to focus the light.

Complete Step by step answer:
The convex mirror is also referred to as a diverging mirror since the incident light originating from the same point will reflect off the mirror surface and diverge. Thus, after the reflection, the light rays diverge and they will never intersect on the object side of the mirror.
A mirror, whether it is flat or curved, the law of reflection states that the light reflects off the mirror in the straight lines at the same angle as that the light hits the mirror. Thus, the incoming angle which is called the angle of incidence equals the angle at which the reflected rays leave which is called the angle of reflection.
For example, convex mirrors are used for cars because they will give an upright image thereby providing a wider field of view as they are curved outwards. Hence a convex mirror makes the reflected rays spread out and thus appear to come to a point behind the mirror thereby forming a smaller virtual image.

Note:
1. The image formed by convex mirrors is always smaller than the object and later gets larger as they approach the mirror.
2. Also, the convex mirrors make the object look shorter and wider than it is.
3. The concave lens will be thinner in the middle and thicker at the edges.