Page 3 OPAC 101 Introduction to Optics, Bütünleme Exam Questions 2. Consider a camera lens, whose focal length is 50 mm, is made up of a telephoto lens (one positive lens and one negative lens) as shown in Figure. Let the first lens is the camera lens with focal length of fi = 50 mm and second lens has a focal (a) What is the distance x if the system is focused for an object distance of 50 cm placed in front of first lens. length of f2 =-100 mm. 1 2 Film (CCD) 20 mm (a) What is the effective focal length of the lens system?

Page 3 OPAC 101 Introduction to Optics, Bütünleme Exam Questions 2. Consider a camera lens, whose focal length is 50 mm, is made up of a telephoto lens (one positive lens and one negative lens) as shown in Figure. Let the first lens is the camera lens with focal length of fi = 50 mm and second lens has a focal (a) What is the distance x if the system is focused for an object distance of 50 cm placed in front of first lens. length of f2 =-100 mm. 1 2 Film (CCD) 20 mm (a) What is the effective focal length of the lens system?