- #1
davidepalmer
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Homework Statement
The focal length of the diverging lens is 74 cm. If an object with height h = 0.6 cm is located at d = 37 cm, what is the height of the image?
Homework Equations
Thin-Lens Equation:
(1/do)+(1/di)=1/f
Magnification Equation:
m=-di/do
The Attempt at a Solution
I know that first I need to find the distance of the image, di. To do this I took: 1/[(1/74cm)-(1/37cm)]. From this I got -74cm.
Next, I plugged this value into the Magnification equation: -(-74cm)/(37cm). From this I received a value of 2. Therefore the image should be 1.2 cm tall. When I entered this answer it was incorrect. I also know this is incorrect because images from a convex lens must be upright, reduced in size, and virtual.
Can anyone help me out on where I am going wrong here?