Question

The image formed by a convex mirror is:
(a) Erect and diminished
(b) Erect and enlarged
(c) Inverted and diminished
(d) Inverted and enlarged

Answer 1

Hint: In this question think of the concept that convex mirrors are also known as diverging mirrors as the rays entering are diverged for near as well as far objects. The image formation by convex mirrors can easily be known by the fact that these mirrors are used in the rear-view mirror of a car. So think of the image that is being in a rear-view mirror of a car. This will help approaching the answer.

Complete step-by-step answer:
Distinguish between the concave and the convex mirror are as follows:

S/N	Differentiating property	Convex mirror	Concave mirror
1	Mirror shape	Convex mirror rounded or curved like the exterior of a circle or sphere.Also called a fish eye or diverging mirror.Convex mirror is curved outside.	Concave mirror is rounded or hollowed like the interior of a circle or a sphere.Also called a converging mirror.Concave mirror is curved inside.
2	Position of focus	Focus lies behind the mirror i.e. focal length is negative.	Focus lies in front of the mirror i.e. focal length is positive.
3	Position of center of curvature	Behind the mirror.	In front of the mirror.
4	Position of the object which is at infinity	At the focus and behind the mirror.	At the focus in front of the mirror.
5	Size of object when it is placed at infinity.	Highly diminished as compared to that of the object.	Much diminished as compared to that of the object.
6	Image of the object when it is placed at infinity.	Image is virtual and erect.	Image is real and inverted.

So the image is virtual, erect and highly diminished.
So this is the required answer.
Hence option (A) is the correct answer.

Note – A real image will always be formed by a converging set of rays whereas a virtual image will be formed by a diverging set of rays. Since a convex mirror is always known as a diverging mirror therefore the image formed by it is always virtual however a concave mirror is simply a converging mirror therefore the images formed by it are real.