Multiple Choice
A cup that is 6.0 cm tall is in front of a concave lens.The image of the cup is 2.5 cm tall and 7.5 cm from the lens.What is the focal length of the lens?
A) -6.0 cm
B) -7.5 cm
C) -13 cm
D) +18 cm
E) +6.0 cm
Correct Answer:

Verified
Correct Answer:
Verified
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