Physics
Physics
Problem
Which of the following statements correctly interprets a negative magnification () for an image formed by a spherical mirror or thin lens? a) The image is virtual and erect. b) The image is virtual and inverted. c) The image is real and inverted. d) The image is real and erect.Intuitive explanation
Negative magnification tells you two things about how the image compares to the object: its size relative to the object, and its orientation. The key insight is that the sign of is separate from its magnitude—the minus sign specifically indicates the image is inverted (flipped upside-down) relative to the object, while tells you whether it's enlarged, reduced, or life-sized. Understanding this distinction lets you quickly rule out answers that confuse size with orientation.
Intuitive explanation
Negative magnification tells you two things about how the image compares to the object: its size relative to the object, and its orientation. The key insight is that the sign of is separate from its magnitude—the minus sign specifically indicates the image is inverted (flipped upside-down) relative to the object, while tells you whether it's enlarged, reduced, or life-sized. Understanding this distinction lets you quickly rule out answers that confuse size with orientation.