The image formed by a spherical mirror is virtual. The mirror will be:(a) concave (b) convex (c) either concave or convex (d) metallic
(b) either concave or convex
Explanation
A concave mirror forms virtual and erect images when the object is placed between pole $(P)$ and focus $(F)$. And, except for this position, it always forms real and inverted images of any size (small, same size, or large).
While, a convex mirror always forms virtual, erect, and diminished images irrespective of the distance between the object and the mirror.
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