Name the mirror which can give:(a) an erect and enlarged image of an object.(b) an erect and diminished image of an object.

The mirror which can give

(a) an erect and enlarged image of an object - concave mirror.

(b) an erect and diminished image of an object - convex mirror.

Explanation

Among all the six cases of image formation by a concave mirror, it forms a real and inverted image in five cases, only in one case it forms a virtual erect and enlarged image of an object, which is when the object is placed between pole $(P)$ and focus $(F)$.

While, a convex mirror always forms a virtual, erect, and diminished image of an object, irrespective of the distance between the object and the mirror.