A real image formed by a convex lens is which of the following?

• A. Upright
• B. Inverted
• C. Not formed
• D. Equal to object size

Answer: (B)

A real image from a convex lens is inverted because the converging rays cross as they are brought to a focus on the opposite side of the lens. When the object lies outside the focal length, one ray travels parallel to the axis and refracts through the focal point, while another ray passes through the center of the lens without bending. These two rays intersect on the far side of the lens, forming a real image. Since the rays cross, the image orientation is flipped relative to the object, giving an inverted image. If the object were inside the focal length, the rays wouldn’t meet on that side, producing a virtual, upright image instead.