At what distance from a concave mirror of focal length f an object is to be placed so that a real image of n times magnified will be formed?

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?

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 ?

A real image of transverse magnification n is formed by a concave mirror of focal length f. Show that the object is placed at a distance of (n+1) f/n from the mirror.

How far should an object be placed from a concave mirror of focal length 15 cm so as to get an image magnified two times?

If real image obtained from concave mirror of focal length f is n times of object, then find object distance.

If the distance between the virtual image from Its real object is 60 cm in case of a concave mirror . The focal length of the concave mirror If the image formed is 3 times magnified image is

If the distance between the virtual image from Its real object is 60 cm in case of a concave mirror . The focal length of the concave mirror If the image formed is 3 times magnified image is

For a concave mirror of focal length f, image is 2 times larger. Then the object distance from the mirror can be