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6. Two students in a physics laboratory each have a concave mirror with the same radius...

6. Two students in a physics laboratory each have a concave mirror with the same radius of curvature, 35 cm. Each student places an object in front of a mirror. The image in both mirrors is one and a half times the size of the object. However, when the students compare notes, they find that the object distances are not the same. What is the distance of the closer object?

I got and it is wrong 29.22 cm

my work is f = 17.5 1/f = 1/di + 1/do

1/17.5 = 1/1.5di+1/do

do=29.22

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