Problem 4 a) A telescope has an objective biconvex lens of focal length 90 cm (call it lens L1) and a biconvex eyepiece of focal length 5cm (call it L2). The telescope is used to examine a rabbit 30 cm high at a distance of 50 m from L1. Where would the intermediate image be from L1. Note: we will assume this intermediate image will be between the lenses. b) What should the distance between the lenses be if the final image is 25cm in front of the eyepiece (L2) c) What is the apparent height of the rabbit as seen through the telescope (image height)? d) Draw the ray diagram showing the lenses, the object, the intermediate, and final image and label the distances. You have to show all rays and extensions where applicable.

Problem 4 a) A telescope has an objective biconvex lens of focal length 90 cm (call it lens L1) and a biconvex eyepiece of focal length 5cm (call it L2). The telescope is used to examine a rabbit 30 cm high at a distance of 50 m from L1. Where would the intermediate image be from L1. Note: we will assume this intermediate image will be between the lenses. b) What should the distance between the lenses be if the final image is 25cm in front of the eyepiece (L2) c) What is the apparent height of the rabbit as seen through the telescope (image height)? d) Draw the ray diagram showing the lenses, the object, the intermediate, and final image and label the distances. You have to show all rays and extensions where applicable.