Multiple Choice
An object is placed at a distance of 58 cm from a thin lens along the axis.If a real image forms at a distance of 39 cm from the lens,on the opposite side from the object,what is the focal length of the lens?
A) 23 cm
B) 49 cm
C) 38 cm
D) 120 cm
E) 37 cm
Correct Answer:

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Correct Answer:
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