IKMC 2027 - Grades 7-8 - Self-study SET 16 - Thematic Batch 3 Question 25

A large tree is photographed. Its image is 3 cm tall. The image distance shown is 50 mm, and the distance from the lens aperture to the tree is 50 m. What is the tree’s actual height?

Editorial model: use the 50 mm image distance explicitly marked in the source diagram.