A symmetric concave lens is made of material of refractive index n=1.50 and radii of curvature |r|=20 cm.
a. What is the focal length of the lens?
b. An object 2.0 cm high is placed 40.0 cm in front of the lens. Use ray tracing to find the position and height of the image. To do this accurately, use a ruler or paper with a grid. Determine the image distance and image height by making measurements on your diagram.
c. Using equations, what is the image location?
d. Using equations, what is the image height? Use a negative value to indicate an inverted image.