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## Homework Statement

What is the image distance for an automobile 4.5 m in front of a convex miror with a 0.15 m focal length? I found this to be 0.155 m

The question I'm having a problem with is: What is the magnification?

## Homework Equations

magnification = - (image distance/object distance)

## The Attempt at a Solution

I thought it would simply be,

-[0.155m/4.5m] = -0.0344. But it's not.

Some help would be much appreciated

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