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Chapter 35: Q.38 (page 1018)

| 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 you’re farsighted, and, like most people, your two eyes have different lens prescriptions. Your left eye uses a lens of power +4.5 D, and your right eye’s lens is +3.0 D. a. Which lens should you use for the objective and which for the eyepiece? Explain.
b. What will be the magnification of your telescope?
c. How far apart should the two lenses be when you focus on distant objects?

Short Answer

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Step by step solution

01

Part (a) Step 1 Given Information

Need to for the objective and for the Eyepiece

02

Part (b) Step 2 Calculation

It will be the magnification of your telescope

03

Part (c) Step 3 Simplifies

The two lenses be when you focus on distant objects

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Most popular questions from this chapter

A camera takes a properly exposed photo with a $3 mm$ diameter aperture and a shutter speed of $1 / 125 s .$ . What is the appropriate aperture diameter for a $1 / 1500 s$ shutter speed?

A 2.0-cm-tall object is $20 c m$ to the left of a lens with a focal length of $10 c m$ A second lens with a focal length of $15 c m$ is $30 c m$ to the right of the first lens.

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