Lenses Definition and 303 Threads

I am having trouble with my homework. I know the answer but I can't figure out how to get there. The question is "An image of a flower is produced on a screen by a lens 1.60m from the screen. The image of the flower has a linear magnification of -2.5. What is the focal point of the lens?" I...

Hello, I am reading over the topic of converging and diverging lenses, and I had a question relating to phenomena of image formation as seen through these. Based on the ray diagrams that are typically used (freshman physics) how does one conclude whehter or not an image is inverted or...

hi! im in a bit of a panic at the moment i have 2 days to complete my physics coursework on focal lengths. the title is: "you are given two convergin lenses of different lengths. you are to devise an experiment:- -to measure the focal length of each lense -to measure the focal...