$A$ convex mirror always forms a virtual and erect image.

$(i)$ Define a real image of an object.
$(ii)$ Name the mirror that:
$(a)$ can give a real as well as a virtual image of an object.
$(b)$ will always give a virtual image of the same size as the object.
$(c)$ will always give a virtual and diminished image of an object.
$(d)$ is used by a doctor in examining teeth.
$(iii)$ With the help of a ray diagram,explain the use of a concave mirror as a solar concentrator.

Discuss the position and nature of the image formed by a concave mirror when the object is moved from infinity towards the pole of the mirror.

When an object is placed between the principal focus $(F)$ and the center of curvature $(C)$ of a concave mirror,what kind of image is formed?

Name the type of mirror used in the following situation and support your answer with a reason:
$(a)$ Solar furnace

The image formed by a convex spherical mirror is always: