MCAT Question A Day - 9/7/13
What is the focal length of a lens that forms a virtual image 30 cm from the lens when a real object is placed 15 cm from the lens?
A. 10 cm
B. 15 cm
C. 30 cm
D. 45 cm
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Click Here for the solution
Want more questions? - Click here to check out our MCAT Question A Day archive