+135 trifrost:Okay, so for my curved mirror equation, I was given an object height of 65cm, object distance of 105cm, and a focal length of 20cm. I am solving for image distance and image height. I wrote my equation for the image distance like this:
1/f = i/do = 1/di
1/f - 1/do = 1/di
1/20 - 1/105 = 1/di
105/2100 - 20/2100 = 1/di
85/2100 = 1/di
2100/85 = di/1
∴ the image distance is 24.7cm.
The problem is, on my sheet is says the correct answer is -48.46. What am I doing wrong? It's very frustrating.
