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Chapter 26: Q15CQ (page 955)
The image produced by the microscope in figure below cannot be projected. Could extra lenses or mirrors project it? Explain.
Yes, the image produced by the microscope in the figure cannot be projected.
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List the various types of aberrations. What causes them and how can each be reduced?
Geometric optics describes the interaction of light with macroscopic objects. Why, then, is it correct to use geometric optics to analyse a microscope’s image?
Unless otherwise stated, the lens-to-retina distance is 2.00 cm.
(a) The print in many books averages 3.50 mmin height. How high is the image of the print on the retina when the book is held 30.0 cmfrom the eye?
(b) Compare the size of the print to the sizes of rods and cones in the fovea and discuss the possible details observable in the letters. (The eye-brain system can perform better because of interconnections and higher order image processing.)
A small telescope has a concave mirror with a 2.00 mradius of curvature for its objective. Its eyepiece is a 4.00 cm focal length lens. (a) What is the telescope’s angular magnification? (b) What angle is subtended by a 25,000 kmdiameter sunspot? (c) What is the angle of its telescopic image?
(a) Where does an object need to be placed relative to a microscope for its 0.500 cmfocal length objective to produce a magnification of -400? (b) Where should the 5.00 cm focal length eyepiece be placed to produce a further fourfold ( 4.00 ) magnification?
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