For what position of the object does a concave mirror form a real and diminished image?

We wish to obtain an erect image of an object,using a concave mirror of focal length $15\, cm$. What should be the range of distance of the object from the mirror? What is the nature of the image? Is the image larger or smaller than the object? Draw a ray diagram to show the image formation in this case.

$A$ virtual,magnified and erect image can be formed by a concave mirror.

State the sign convention used to measure distances from a mirror.

$A$ convex mirror is used to form the image of a real object. Then tick the wrong statement.

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