Gce Model Questions Vol1 2017 Physics Question 49
Practice objective / multiple choice question 49 from the 2017 Gce Model Questions Vol1 Physics examination.
A converging lens of unknown focal length forms a real image of a candle on a screen. The distance between the candle (object) and the screen (image) is \(120\,\text{cm}\). When the lens is moved \(20\,\text{cm}\) closer to the candle, the image distance becomes \(40\,\text{cm}\). Determine the focal length of the lens (to the nearest centimetre) and the original object distance (to the nearest centimetre).
Answer Options
About This Question
This is Gce Model Questions Vol1 2017 Physics Question 49. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.