10. I want to build a telescope with lenses of focal lengths 20 cm and 1 cm. a. Which lens is most appropriate as the eyepiece (the one you look into)? Why? b. What should be the spacing between the lenses when I focus at a distant (treat as infinity) object? c. If I try to look at a closer object (say a bird in a tree), this means d. for the objective (first lens) is smaller, so d, for this same lens must now be longer. This means to focus on a closer object, I must increase the spacing between the two lenses. I make my telescope so I can lengthen the distance between the lenses by 2 cm. What is the closest object can I focus on?

10. I want to build a telescope with lenses of focal lengths 20 cm and 1 cm. a. Which lens is most appropriate as the eyepiece (the one you look into)? Why? b. What should be the spacing between the lenses when I focus at a distant (treat as infinity) object? c. If I try to look at a closer object (say a bird in a tree), this means d. for the objective (first lens) is smaller, so d, for this same lens must now be longer. This means to focus on a closer object, I must increase the spacing between the two lenses. I make my telescope so I can lengthen the distance between the lenses by 2 cm. What is the closest object can I focus on?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter38: Diffraction Patterns And Polarization

Section: Chapter Questions

Problem 38.8OQ: Why is it advantageous to use a large-diameter objective lens in a telescoped (a) It diffracts the...

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