A convex lens of focal length 15 cm produces a magnification of +4. The object is placed:

An object is 0.09 m from a magnification lens and the image is formed 36 cm from the lens the magnification produced is:

To obtain a magnification of, -2 with a convex lens of focal length 10 cm, the object should be placed:

If a magnification of, -1 is to be obtained by using converging lens of focal length 12 cm, and then the object must be placed:

In order to obtain a magnification of, -0.75 with a convex lens of focal length 8 cm, the object should be placed: