Chapter 33: Problem 5
What type of lens is a magnifying glass? a) converging d) cylindrical b) diverging e) plain c) spherical
Chapter 33: Problem 5
What type of lens is a magnifying glass? a) converging d) cylindrical b) diverging e) plain c) spherical
All the tools & learning materials you need for study success - in one app.
Get started for freeTwo refracting telescopes are used to look at craters on the Moon. The objective focal length of both telescopes is \(95.0 \mathrm{~cm}\) and the eyepiece focal length of both telescopes is \(3.80 \mathrm{~cm} .\) The telescopes are identical except for the diameter of the lenses. Telescope A has an objective diameter of \(10.0 \mathrm{~cm}\) while the lenses of telescope \(\mathrm{B}\) are scaled up by a factor of two, so that its objective diameter is \(20.0 \mathrm{~cm}\). a) What are the angular magnifications of telescopes \(A\) and \(B\) ? b) Do the images produced by the telescopes have the same brightness? If not, which is brighter and by how much?
Is it possible to design a system that will form an image without lenses or mirrors? If so, how? and what drawbacks, if any, would it have?
What is the magnification of a telescope with \(f_{0}=1.00 \cdot 10^{2} \mathrm{~cm}\) and \(f_{e}=5.00 \mathrm{~cm} ?\)
In H.G. Wells's classic story The Invisible Man, a man manages to change the index of refraction of his body to 1.0 ; thus, light would not bend as it enters his body (assuming he is in air and not swimming). If the index of refraction of his eyes were equal to one, would he be able to see? If so, how would things appear?
What would you expect to happen to the magnitude of the power of a lens when it is placed in water \((n=1.33) ?\) a) It would increase. d) It would depend if the b) It would decrease. lens was converging or c) It would stay the same. diverging.
What do you think about this solution?
We value your feedback to improve our textbook solutions.