Neco 2022 Physics Question 21
Practice objective / multiple choice question 21 from the 2022 Neco Physics examination.
An object (a candle) is placed 18 cm in front of a thin converging lens L1 of focal length \(12\ \text{cm}\). A second thin converging lens L2 is positioned 8 cm to the right of L1. The final image formed by the two‑lens system is located 20 cm to the right of L2 on a screen. Determine the focal length of L2 (in cm).
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About This Question
This is Neco 2022 Physics Question 21. It is one of the objective questions from the 2022 Neco Physics examination.
Difficulty level: Medium .
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