UNIVERSITY OF COLORADO - COLORADO SPRINGS Geometric Optics Name: PES 2150 Prelab Questions 1.) Consider a lens with focal length +f. An erect object located outside the focal length from the lens. a.) Draw a ray diagram for this arrangement to locate the image Insert with all principal rays for a lens. Word has simple drawing tools, under the "Insert" Tab > "Shapes" tools. If you draw Lines your diagram by hand it must be neat and drawn with a straight edge such as a ruler. Line angles 1 square = 1 cm b.) Based on your ray diagram characterize: the object Your answer here (erase this!) the image Your answer here (erase this!) the lens Your answer here (erase this!)