If a 3 cm tall object placed perpendicular to principal axis of a convex lens of focal length 15 cm produces a real inverted image of height 15 cm, then its object distance (u) is ……. and image distance (v) is ………

If a 3 cm tall object placed perpendicular to principal axis of a convex lens of focal length 15 cm produces a real inverted image of height 15 cm, then its object distance (u) is ……. and image distance (v) is ………