If the focal length of a lens is 10 cm and v = 2.5u, what is the object distance u? - ELECTRONIC DEVICES Quiz | GKFix.in

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Question

If the focal length of a lens is 10 cm and v = 2.5u, what is the object distance u?

A. –5 cm
B. –6 cm
C. –7 cm
D. –8 cm

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