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?
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter25: Optical Instruments
Section: Chapter Questions
Problem 20P: A person sees clearly wearing eyeglasses that have a power of 4.00 diopters when the lenses are 2.00...
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![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?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc841acbd-9888-4871-ab67-977a127268eb%2F0b77a578-5cb2-468e-96aa-88f9c86b6506%2Fovbqzvl.png&w=3840&q=75)
Transcribed Image Text: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?
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