Victory for the ACT Student Text 15e

L ESSON 2 | R ESEARCH S UMMARY • 319 33. Based on the information provided, approximately how tall are the LED candles used in these experiments? A. 5 cm B. 10 cm C. 20 cm D. Cannot be determined from the given information 34. For a thin converging lens in air, the lens formula relates focal length, f , to object distance, o , and image distance, i : = + f i o 1 1 1 Using this information, what is the focal length of the lens used in Experiment 1? F. 33.3 cm G. 40 cm H. 10 cm J. 5 cm

32. Which of the following graphs best represents the relationship between object distance and image distance for a thin converging lens in air? F.

G.

H.

J.