in physics? When the paper is held 26 cm below the lens, the sunlight is focused on the paper and the paper ignites. What is the focal length of the lens?
I could use some help on this problem, not to sure how to start, I tried using (1/di)+(1/do)= 1/f but didn't quite understand what the "o" was in this problem can anyone help me out?
I could use some help on this problem, not to sure how to start, I tried using (1/di)+(1/do)= 1/f but didn't quite understand what the "o" was in this problem can anyone help me out?