Consider the following diagram in which 𝑀 is a mirror and 𝑃 is an object and Q is its enlarged image created by the mirror. 

Mention the type of mirror M and one characteristic property of the image 𝑄.

We will draw the ray diagram first and try to identify the nature of the mirror.

The object is kept between the focus and the pole of the mirror, and as we can see when we draw a ray parallel to the principal axis and a ray passing through the pole of the mirror and when we extend the reflected rays to meet at a point where is image is formed, we can see that the nature of the mirror is converging as the incident rays are converging to a point in the other side of the mirror to form a virtual object. 

Therefore, the mirror is a concave mirror.