Choose the one alternative that best completes the statement or answers the question. -An object is placed 15 cm from a spherical concave mirror with a focal length of magnitude 20

Choose the one alternative that best completes the statement or answers the question.
-An object is placed 15 cm from a spherical concave mirror with a focal length of magnitude 20 cm. If the object is 4.0 cm tall, how tall is the image?
A) 2.0 cm
B) 16 cm
C) 1.0 cm
D) 8.0 cm

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