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CE To construct a telescope, you are given a lens with a
Chapter 27, Problem 67P(choose chapter or problem)
Problem 67P
CE To construct a telescope, you are given a lens with a focal length of 32 mm and a lens with a focal length of 1600 mm. (a) On the basis of focal length alone, which lens should be the objective and which the eyepiece? Explain. (b) What magnification would this telescope produce?
Questions & Answers
QUESTION:
Problem 67P
CE To construct a telescope, you are given a lens with a focal length of 32 mm and a lens with a focal length of 1600 mm. (a) On the basis of focal length alone, which lens should be the objective and which the eyepiece? Explain. (b) What magnification would this telescope produce?
ANSWER:
Step 1 of 2
(a)
Here we need to choose the objective and eyepiece lenses for telescope on the basis of their focal lengths. The focal lengths of the given lenses are and .
The focal length of the objective lens should be longer than the eyepiece lens. Therefore, the focal length of the objective lens is and focal length of the eyepiece is .