Post Utme Noun 2021 Physics Question 17
Practice objective / multiple choice question 17 from the 2021 Post Utme Noun Physics examination.
A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length -15 cm. What is the focal length of the combination?
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About This Question
This is Post Utme Noun 2021 Physics Question 17. It is one of the objective questions from the 2021 Post Utme Noun Physics examination.
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