Post Utme Coal City University 2018 Physics Question 7
Practice objective / multiple choice question 7 from the 2018 Post Utme Coal City University 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 Coal City University 2018 Physics Question 7. It is one of the objective questions from the 2018 Post Utme Coal City University Physics examination.
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