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Chapter 26: Q17PE (page 956)
Repeat the previous problem for eyeglasses held 1.50 cm from the eyes.
The power of vision of a myopic man must be reduced (corrected) by 5.41 D.
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A student’s eyes, while reading the blackboard, have a power of 51.0 D. How far is the board from his eyes?
A large reflecting telescope has an objective mirror with a 10.0m radius of curvature. What angular magnification does it produce when a 3.00m focal length eyepiece is used?
Unless otherwise stated, the lens-to-retina distance is 2.00 cm.
What was the previous far point of a patient who had laser vision correction that reduced the power of her eye by 7.00 D, producing normal distant vision for her?
Your friends show you an image through a microscope. They tell you that the microscope has an objective with a \({\rm{0}}{\rm{.500}}\) cm focal length and an eyepiece with a \({\rm{5}}{\rm{.00}}\) cm focal length. The resulting overall magnification is\({\rm{250,000}}\). Are these viable values for a microscope?
Find the distance between the objective and eyepiece lenses in the telescope in the above problem needed to produce a final image very far from the observer, where vision is most relaxed. Note that a telescope is normally used to view very distant objects.
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