An object tall is placed in front of a thin diverging lens whose focal length is .
PHYSICS · Multi-part · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
An object 4.0cm tall is placed 10cm in front of a thin diverging lens whose focal length is −15cm.
(a) Draw an approximate ray diagram—including at least two principal rays—that shows how the lens forms an image of the object. Label the focal points, the lens, and the approximate location of the image.
(b) Determine quantitatively the image distance and the image height. Clearly indicate the algebraic signs of all calculated quantities and include units.
(c) Using both the diagram from part (a) and the calculations from part (b), explain whether the image is real or virtual, upright or inverted, and enlarged or reduced.