Galileo devised a simple terrestrial telescope that produces anupright image. It
ID: 1674623 • Letter: G
Question
Galileo devised a simple terrestrial telescope that produces anupright image. It consists of a converging objective lens and adiverging eyepiece at opposite ends of the telescope tube. Fordistant objects, the tube length is the objective focal length lessthe absolute value of the eyepiece focal length. (a) Does the user of the telescope see a realor virtual image?1 Virtual Image RealImage
(b) Where is the final image? (For values of infinity, enter999 as your answer.)
qe = 2
(c) If a telescope is to be constructed with a tube 9.8 cm long and a magnification of 2.20, what are the focal lengths of the objectiveand eyepiece?
feyepiece = cm <======Incorrect and need Help!!!
fobjective = cm <======Incorrect and NeedHelp!!! I have answered all the parts but the lasttwo. Can anyone help? Thanks and Lifesavers waiting for the firstbidder!
(a) Does the user of the telescope see a realor virtual image?
1 Virtual Image RealImage
(b) Where is the final image? (For values of infinity, enter999 as your answer.)
qe = 2
(c) If a telescope is to be constructed with a tube 9.8 cm long and a magnification of 2.20, what are the focal lengths of the objectiveand eyepiece?
feyepiece = cm <======Incorrect and need Help!!!
fobjective = cm <======Incorrect and NeedHelp!!! 1 Virtual Image RealImage 1 Virtual Image RealImage 1 I have answered all the parts but the lasttwo. Can anyone help? Thanks and Lifesavers waiting for the firstbidder!
Explanation / Answer
Telescope Length = f eye piece + f objective Let us call it as L = Fe+Fo Fo+Fe = 9.8 cm --------------(1) Magnification m = Fo/Fe 2.2 = Fo/Fe Fo = 2.2Fe ----------------(2) From equation (1) 2.2Fe+Fe = 9.8 Fe = 9.8/3.2 = 3.0625 cm Fo = 2.2*3.0625 = 6.7375 cmRelated Questions
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