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Image distance

  • #1

Homework Statement


An object is placed against the center of a spherical mirror and then moved 79 cm from it along the central axis as the image distance i is measured. Figure 34-35 gives i versus object distance p out to ps = 45 cm. What is the image distance when the object is on the central axis and 79 cm from the mirror?

The image distance is the y axis from -400 to 400cm. The object distance is from 0 to ps on the x-axis. The graph looks like a graph of the function 1/x.


Homework Equations


1/f=1/p+1/i


The Attempt at a Solution


1/22.5=1/79+1/i
i= +31.5cm

Is my answer correct?
 

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