A small candle is placed at a distance greater than the focal length from a…
PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A small candle is placed at a distance greater than the focal length from a converging lens. The lens forms an inverted real image on a screen. Which statement best explains why the image is inverted and real?
(a) Only rays that pass near the center of the lens travel straight, while edge rays are bent so much that the image flips; this bending alone makes the screen record an inverted picture.
(b) Because the object distance exceeds the focal length, the lens forms a magnification less than 1, and a magnification less than 1 always corresponds to an inverted real image.
(c) Rays from the top and bottom of the candle refract through the lens and physically cross on the opposite side, so the screen captures that crossing as an inverted real image.
(d) The lens first makes the diverging rays parallel; these parallel rays then strike the screen at different heights, producing an upside-down but still real image.