Linear magnification produced by a convex lens can be:(a) less than 1 or more than 1.(b) less than 1 or equal to 1.(c) more than 1 or equal to 1.(d) less than 1, equal to 1 or more than 1.

(d) less than 1, equal to 1 or more than 1.

Explanation

Magnification formula:

$m=\frac {v}{u}=\frac {h_2}{h_1}$

where,  $m$ = magnification, $v$ = image distance, $u$ = object distance, ${h_2}$ = height of image, ${h_1}$ = height of object.

 From the magnification formula, it is clear that the magnification varies directly with the size of the image. The image formed by a convex lens may be smaller than, equal to, or bigger than the object, therefore, the magnification $(m)$ produced by a concave lens can be less than 1, equal to 1, or more than 1.