15_Chapter 25 HomeworkCH25 Optical Instruments

15_Chapter 25 HomeworkCH25 Optical Instruments - 351...

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Optical Instruments 351 (a) The angular magnification (or magnifying power) of the telescope is then 0.833 m 7.50 0.111 m o e f m f + == = + (b) The length of the telescope is 0.833 m 0.111 m 0.944 m oe Lf f =+= + = 25.29 (a) From the thin lens equation, pf q p f = , so the lateral magnification by the objective lens is ( ) M hh qp f p f −= − − . Therefore, the image size will be f hf h hM h p ff p − = −− (b) If p f >> , then and fp p −≈ f h h p ′≈− (c) Suppose the telescope observes the space station at the zenith. Then, () ( ) -3 3 4.00 m
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