course PHY 202 I'm not sure if I wrote this up correctly, but I tried my best to give a brief synopsis of what my experiement and results. I performed each of the experiments as instructed. My results are as follows.1/f=1/o+1/i, where f=focal distance, o=object distance and i=image distance. In each of my trials, I found that one of my variables must have been off, because the formula does not work out. For example, in the first part of the experiment, f=59 cm, i=4.5 cm, and o=20 cm. As you can see, when I add the 1/59=.020, thus 1/4.5 is .222 and 1/20=.050. As you can see .222+.050= .272 cm. This is the same for each of my trials because my focal distance is the same for each and my image distance never varies by more than 1-1.5 cm. I do understand the concept and how the formula for deriving focal distance should be true, however, it did not work out in my experiments. To verify the formula: magnitude of the magnification=image distance/object distance. For my first trial, the image distance=17.2 cm and my object distance=40 cm. 17.2cm/40cm=.43. In the second trial image distance =14 cm and the object distance=30 cm. 14/30 cm= .46. THe magnification of the lens in both trials was 50 mm, so it looks like the data was fairly accurate. In each of my two candle trials, the distance between the images of the flames were .5 cm, 1 cm, and 1.5 cm respectively, however, I am not quite sure how to measure them to the the proportion of the actual distance to the image distance and the object distance. I can tell that the images from my candles through the concave lens are inverted because the image will appear in the opposite direction of the object. In other words, when the cone was right side up, it appeared upside down in my experiment. "