Physics · Oct / Nov 2016 · Paper 11 · Question 25
5054Thin lenses
In the diagram, a convex lens forms an image I of an object O. The diagram is not drawn to scale. What is the focal length of the lens?
- A16 cm
- B20 cm
- C36 cm
- D45 cm
As printed in the paper
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Correct answer: B. 20 cm
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