Linear magnification produced by a convex lens can be:

Which of the above cases represents the use of convex lens in a film projector, in a camera, and as a magnifying glass?

A spherical mirror and a spherical lens each have a focal length of, -15 cm. The mirror and the lens are likely to be:

Magnification produced by a concave lens is always:

In order to obtain a magnification of, -3 (minus 3) with a convex lens, the object should be placed: