Thin lens equation- determine image distance and height1. 15.0cm object is placed 60.0cm from a convex lens, which has a focal length of 15.0hi=15cm do=60cm f=15.0cm2. 15.0cm object is placed 30.0cm from a convex lens, which has a focal length of 15.0hi=15cm do=30cm f=15.0cm3. 15.0cm object is placed 16.0cm from a convex lens, which has a focal length of 15.0hi=15cm do=16cm f=15.0cm4. 15.0cm object is placed 15.0cm from a convex lens, which has a focal length of 15.0hi=15cm do=15cm f=15.0cm5. 15.0cm object is placed 10.0cm from a convex lens, which has a focal length of 15.0hi=15cm do=10cm f=15.0cm6. 7.0cm object is placed 17.0cm from a convex lens, which has a focal length of 10.0hi=7cm do=17cm f=10.0cm