When an object is positioned beyond twice the focal length (\(2f\)) of a concave mirror, the resulting image is characterized as real, inverted, and diminished. The relationship governing these parameters is defined by the mirror equation: \[ \frac{1}{f} = \frac{1}{v} + \frac{1}{u}, \] where \(f\) denotes the focal length, \(v\) represents the image distance, and \(u\) signifies the object distance. Therefore, placing the object beyond \(2f\) yields a real, inverted, and diminished image. The applicable condition is: \[ \boxed{\text{Beyond twice the focal length}}. \]