An image formed by a lens is erect. Such an image could be formed by a
$(a)$. convex lens provided the image is smaller than object.
$(b)$. concave lens provided the image is smaller than object.
$(c)$. concave lens provided the image is larger than object.
$(d)$. concave lens provided the image is of the same size.
A concave lens forms an erect, virtual, and diminished$(or\ smaller)$ image of an object.
So, option $(b)$ is correct.
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