Question by Sam Smith: Light Magnification and Spherical Mirror?
The figure under gives the lateral magnification m of an object versus the object distance p from a spherical mirror as the object is moved along the mirror’s central axis via a range of values for p. (The horizontal axis is marked in increments of two.5 cm.) What is the magnification of the object when the object is 68 cm from the mirror?
In the figure, I took the point m=.5 and p=12.5
Answer by rex
If p is 12.5 when m = .five then the image distance is six.25 cm
focal length if the mirror is concave = 4.167 cm
when p = 68 image distance will be four.44 cm so magnification will be .065
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