What is the distance of an object from a concave mirror of focal length 20 cm so that the size of the real image is three times the size of the object ?

Find the distance of object from a concave mirror of focal length 10 cm so that image size is four time the size of the object.

Find the distance of object form a concave morror of focal length 10 cm so that image size is four times the size of the object.

Find the distance of object form a concave morror of focal length 10 cm so that image size is four times the size of the object.

At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.

Find two positions of an object, placed in front of a concave mirror of focal length 15cm, so that the image formed is 3 times the size of the object.

A concave mirror of focal length produces an image m times the size of the object. If image is real, then the distance of the object from mirror is

At what distance in front of a concave mirror of focal length 10 cm, an object be placed so that its real image of size five times that of the object is obtained?