Between which two points of a concave mirror should an object be placed to obtain a magnification of -3?

Between which two points of concave should an object be placed to obtain a magnification of : (a) -3, (b) +2.5, (c ) -0.4

Between which two points of a concave mirror should an object be placed to obtain a virtual magnified image?

When an object is placed at a distance of 60 cm from a convex mirror, the magnification produced is 1/2. Where should the object be placed to obtain a magnification of 1/3?

When an object is placed at a distance of 60 cm from a convex spherical mirror, the magnification produced is 1//2 . Where should the object be placed to get a magnification of 1//3 ?

When an object is placed at a distance of 60 cm from a convex spherical mirror, the magnification produced is 1//2 . Where should the object be placed to get a magnification of 1//3 ?

When an object is placed at a distance 60 cm from a convex spherical mirror, the magnification produced is 1//2 . Where should the object be placed to get a magnification of 1//3 ?

When an object is placed at a distance of 60 cm from a convex spherical mirror, the magnification produced is 1//2 .Where should the object be placed to get a magnification of 1//3 ?