If a magnification of, -1 (minus one) is to be obtained by using a converging mirror, then the object has to be placed :

If a magnification of, -1 (minus 1) is obtained by using a converging lens, then the object has to be placed:

In order to obtain a magnification of, -0.6 (minus 0.6 ) with a concave mirror, the object must be placed :

A convex mirror produces a magnification of 1//2 when the object is placed at a position A and a magnification of 1//3 when the object is at a position B. If the separation between the positions A and B be 30 cm, what is the focal length of the mirror ?

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

What is the magnification of an object placed at the focus of a concave mirror?

The image of an object formed by a mirror is real, inverted and is of magnification - 1. If the image is at the distance of 30 cm from the mirror. (i) Where is the object placed ? (ii) Find the position of the image object is now moved 20 cm towards the mirror. (iii) What is the nature of the image obtained ? Justify your answer with the help of ray diagram.