ringelos

I think I have got to something. From what I can tell, we have a hi=2 and a ho=4 and a focal length that doesnt fit into the equation. Is this correct? So m= 2/4 = -di/do m= 0.5 If I am correct we now have magnification - now what? Do we multiply our focal length by 0.5 to get a value, then add said value to our focal length? So, 10x0.5 = 5, 10+5 = 15

I am having serious trouble with this question and I'm hoping to get some assistance with it. The question goes as follows: Suppose a lens with a focal length of 10.0cm produces an inverted image half the size of a 4.0cm object. How far apart are the object and image? Show all your work. Any help is appreciated.