A candle is located 30 cm in front of a concave spherical mirror having principal focus f = 10 cm, as shown in the diagram below. What is the image distance? [ Select ] 15 cm 0.067 cm 7.5 cm -30 cm What is the magnification? [ Select ] -0.5 x -1.0 x -2.0 x -7.5 x What are the image characteristics? [ Select ] real, reduced, and inverted real, enlarged, and inverted virtual, enlarged, and inverted virtual, reduced, and upright   多重下拉选择题