The image of a pin formed by a diverging lens o... - WAEC Physics 1992 Question
The image of a pin formed by a diverging lens of focal length 10cm is 5cm from the lens. Calculate the distance of the pin from the lens
A
-3.3cm
B
3.3cm
C
10.0cm
D
15.0cm
correct option: b
1/u - 1/v = 1/f; f = 10cm, v = 5cm
u = 10/3 = 3.3cm
u = 10/3 = 3.3cm
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