The image formed by a convex mirror of focal length `30 cm`. is a quarter of the object. What is the distance of the object from the mirror ?

The image formed by a convex mirror of focal length 20 cm is a quarter of the object. What is the distance of the object from the mirror?

The image formed by a convec mirror of focal length 30 cm is a quarter the size of the object what is the distance of the obect from the mirror?

Image formed by a concave mirror of focal length 6 cm , is 3 times of the object, then the distance of object from mirror is