Question

a) i and ii

Lab 7 - Optical Instruments Part I: Multiple Lens Systems The main idea we will use to study how light behaves when passing through multiple optical devices is that we can treat each optical device separately and then combine them. We will apply the rules for ray tracing and use the relationships 1 dod, F + and M -- -- for each device one at a time. And then we will combine them using the fact that Image #1 - Object # 2 Image #2 - Object # 3 and M - M.M.M. Etc. Note: The above says that Image #1 serves as Object #2. It does NOT say that the image distance you find for the first device is the number you plug in for the object distance for the second device. You will need to draw pictures and figure out distances accordingly. To see how this works, • Set up the optical bench lamp with the letter F at one end of the bench. • Place an f = +10 cm lens at a distance of 20 cm from object. Note: You have lenses labeled f =+ 10.2 cm at your table. For simplicity we will refer to them as f = +10 cm and you can use the approximation f = +10 cm in any calculations a) Locate Image #1 with a screen (Make a note of its position i) Record the object and image distances and compute the magnification for the FIRST lens. ii) Is Image #1 bigger, same size, or smaller than Object #1? Inverted or same orientation as Object #1? Is this consistent with the computed magnification M,?

Answer 1

رز) do 200 f OCH - d-f - 1 do + : di f di f do dof 7 di- dof (20cm) (locm) - - 20cm do -f (2002) - (10cm) di = 20cm M = 20cm - 1 do 20cm cin magnification -di IMEI it means size of image is M is negative hence image is inverted same as that of object