Neco Model Questions Vol1 2021 Physics Question 49
Practice objective / multiple choice question 49 from the 2021 Neco Model Questions Vol1 Physics examination.
Two thin converging lenses are placed coaxially. Lens L₁ has focal length \(f_{1}=12\,\text{cm}\). Lens L₂ has an unknown focal length \(f_{2}\). An object is placed \(18\,\text{cm}\) to the left of L₁. The lenses are \(40\,\text{cm}\) apart. The final image formed by L₂ is real and located \(30\,\text{cm}\) to the right of L₂. Find the focal length \(f_{2}\) of the second lens (in centimetres).
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About This Question
This is Neco Model Questions Vol1 2021 Physics Question 49. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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