Solution Found!
An amateur astronomer wants to build a small refracting
Chapter 27, Problem 70P(choose chapter or problem)
Problem 70P
An amateur astronomer wants to build a small refracting telescope. The only lenses available to him have focal lengths of 5.00 cm, 10.0 cm, 20.0 cm, and 30.0 cm. (a) What is the greatest magnification that can be obtained using two of these lenses? (b) How long is the telescope with the greatest magnification?
Questions & Answers
QUESTION:
Problem 70P
An amateur astronomer wants to build a small refracting telescope. The only lenses available to him have focal lengths of 5.00 cm, 10.0 cm, 20.0 cm, and 30.0 cm. (a) What is the greatest magnification that can be obtained using two of these lenses? (b) How long is the telescope with the greatest magnification?
ANSWER:
Step 1 of 3
(a)
Here we need to determine the greatest magnification that can be obtained using given lenses. In order to achieve the maximum magnification, the focal length of the objective lens should be maximum and the focal length of the eyepiece should be minimum. From the given set of lenses, we have
and