Chapter 35: Q. 26 (page 1017)
In figure
Short Answer
The position of each location, giving your answer as a distance left or right of the lens is
Chapter 35: Q. 26 (page 1017)
In figure
The position of each location, giving your answer as a distance left or right of the lens is
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Get started for freeTwo converging lenses with focal lengths of
a. Use ray tracing to find the position and height of the image. Do this accurately using a ruler or paper with a grid, then make measurements on your diagram.
b. Calculate the image position and height. Compare with your ray-tracing answers in part a.
Marooned on a desert island and with a lot of time on your hands, you decide to disassemble your glasses to make a crude telescope with which you can scan the horizon for rescuers. Luckily youโre farsighted, and, like most people, your two eyes have different lens prescriptions. Your left eye uses a lens of power
b. What will be the magnification of your telescope?
c. How far apart should the two lenses be when you focus on distant objects?
The resolution of a digital cameras is limited by two factors diffraction by the lens, a limit of any optical system, and the fact that the sensor is divided into discrete pixels. consirer a typical point-and--shoot camera that has a
(a) . First, assume an ideal, diffractionless lens, at a distance of
(b) . You can achieve the pixel-limied resolution of part a only if the diffraction which of each image point no greater than the diffraction width of image point is no greater than
(c). what is the
Youโve been asked to build a telescope from a
a. What is the maximum magnification you can achieve?
b. Which lens should be used as the objective? Explain.
c. What will be the length of your telescope?
Ellen wears eyeglasses with the prescription
a. What eye condition does Ellen have?
b. What is her far point without the glasses?
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