Problemset10_Solutions

# Problemset10_Solutions - of the Hubble telescope[4 A small...

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P114 - Problem Set 10 Homework to be handed in by 1700hrs on Tuesday 10 April 2007 . [1] Light conditions on a certain day for a certain f lm call for an aperture stop of f/8 at 1/250 sec. a; If you wish to take a picture of a humming bird at 1/1000 sec what f/number should you use?. b; If you set the aperture at f/22 for another picture, what shutter speed should you use? [2] a) An object 3.0 cm high is placed 20 cm in front of a thin lens of power +20 diopters. Draw a precise ray diagram to f nd the position and size of the image and check your answer using the thin-lens formula. b) Repeat the above for the case where the lens has a power of -20 diopters. [3] The distance to the moon is 380,000 km, and it is viewed at a wavelength of 600 nm. a) How far apart must two objects be on the moon to be resolved by the human eye when the pupil of the eye is 6 mm? b) How far apart must two objects be separated on the moon if viewed using the 2.4 m diameter mirror

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Unformatted text preview: of the Hubble telescope? [4] A small object is 20 cm from a thin positive lens of focal length 10 cm. To the right of the lens is a plane mirror that crosses the axis of the second focal point of the lens and is tilted so that the re F ected rays do not go back through the lens. a) Find the position of the f nal image b) Is it real or virtual? c) Sketch a ray diagram showing the f nal image [5] An object is 15 cm in front of a positive lens of focal length 15 cm. A second positive lens of focal length 15 cm is 20 cm from the f rst lens. Find the f nal image and draw a ray diagram. [6] A microscope has an objective of focal length 16 mm and an eyepiece that gives an angular magni f cation of 5 for a person whose near point is at 25 cm. The tube length is 18 cm. See Tipler chapter 32 if you need help. a; What is the lateral magni f cation of the objective? b; What is the magnifying power of the microscope? 1...
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## This note was uploaded on 04/07/2008 for the course PHY 113 taught by Professor Jordan during the Spring '08 term at Rochester.

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Problemset10_Solutions - of the Hubble telescope[4 A small...

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