Question

To obtain a magnification of -0.5 with the convex lens the object should be placed at

Answer 1

Answer

Explanation:

As the magnification by a convex lense is negative, thus the convex lense must produce an image of real inverted and enlarged.

Hence, the object must be placed bet f and 2f to produce an image of inverted real and enlarged(here "f" is the focal point).

Convex lenses mostly produces images of real inverted and enlarged when object lies in front of the lense producing a magnification of negative sign.