If the magnification of a virtual image formed of an object 10cm from a convex lens is 3, then the focal length of the lens is
Correct Answer: Option B
V = 3u, U = 10cm
V = 10 × 3 =30cm
Since, we are dealing with a vertual image, V = -ve,
F = UV/(U+V)
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His Name is Tiamiyu Abdulbazeet Olawale. He is a student at the University of Ilorin studying Electrical and Electronics Engineering. He likes to give the latest updates about Nigeria and international institutions as he aims at helping people to lay their hands on the right information.