Question

If a mirror forms a virtual, erect and small image, then kind of mirror is ??

Answer 1

Convex mirror:

    Convex spherical mirror forms small, erect and virtual image behind the mirror.    Answer.  

   The reason being that parallel rays from the objects get reflected and diverged from the mirror. So they do not meet in reality. Only projected (backward) rays meet behind the mirror.

   Whereas, a plane mirror forms a virtual, erect and equal sized image behind mirror. It is because the parallel rays from object get reflected parallelly and do not meet in reality or when projected backwards.

   Also a concave mirror forms a real inverted images (smaller or bigger) in front of mirror, depending on the object distance.  Concave mirror can also form virtual erect and bigger images if the object is closer than the focus of the mirror.

Answer 2

$\underline \bold{Solution:-}$

If a mirror forms a virtual , erect and small image then the mirror is a convex mirror.

Convex mirror forms the virtual, erect and small image because when the parallel ray of light strikes the surface of convex mirror then they are are diverges in the same direction from which they are coming so they cannot intersect each other at any point in reality. But they can intersect on the other side of the mirror where they can form a virtual image.

The image formed in this case is always smaller than the object.

The image is erect because all the virtual images formed by a mirror or lens are are erect.