Choose the one alternative that best completes the statement or answers the question. -An object is placed 10 cm from a convex lens with a focal length of magnitude 20 cm.

Choose the one alternative that best completes the statement or answers the question.
-An object is placed 10 cm from a convex lens with a focal length of magnitude 20 cm. What is the magnification?
A) 2.0
B) -2.0
C) 1.5
D) 0.50
E) -2.5

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