The human eye is a complex multiple-lens system. However, it can be approximated to an equivalent single converging lens with an average focal length...

The human eye is a complex multiple-lens system. However, it can be approximated to an equivalent single converging lens with an average focal length about 2.7 cm when the eye is relaxed. If an eye is viewing a 2.0-m-tall tree located 25 m in front of the eye, what are the height and orientation of the image of the tree on the retina?