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Chapter 33: Problem 65
What is the magnification of a telescope with \(f_{0}=1.00 \cdot 10^{2} \mathrm{~cm}\) and \(f_{e}=5.00 \mathrm{~cm} ?\)
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Which one of the following is not a characteristic of a simple two-lens astronomical refracting telescope? a) The final image is virtual. b) The objective forms a virtual image. c) The final image is inverted.
An object is placed on the left of a converging lens at a distance that is less than the focal length of the lens. The image produced will be a) real and inverted. c) virtual and inverted. b) virtual and erect. d) real and erect.
A physics student epoxies two converging lenses to the opposite ends of a \(2.0 \cdot 10^{1}-\mathrm{cm}\) -long tube. One lens has a focal length of \(f_{1}=6.0 \mathrm{~cm}\) and the other has a focal length of \(f_{2}=3.0 \mathrm{~cm}\). She wants to use this device as a microscope. Which end should she look through to obtain the highest magnification of an object?
As a high-power laser engineer you need to focus a 1.06-mm diameter laser beam to a 10.0 - \(\mu\) m diameter spot \(20.0 \mathrm{~cm}\) behind the lens. What focal length lens would you use?
Two distant stars are separated by an angle of 35 arcseconds. If you have a refracting telescope whose objective lens focal length is \(3.5 \mathrm{~m}\), what focal length eyepiece do you need in order to observe the stars as though they were separated by 35 arcminutes?
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