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16_Ch 25 College Physics ProblemCH25 Optical Instruments

# 16_Ch 25 College Physics ProblemCH25 Optical Instruments -...

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352 CHAPTER 25 (c) The angular magnification is 3.00 o e f m f == , giving 3.00 o f = e f . Also, the length of the telescope is 3.00 10.0 cm oe e e Lf f f f =+= − = , giving 10.0 cm 5.00 cm 2.00 ee ff =− = − and 3.00 15.0 cm 25.31 The lens for the left eye forms an upright, virtual image at 50.0 cm L q = − when the object distance is , so the thin lens equation gives its focal length as 25.0 cm L p = () ( ) 25.0 cm 25.0 cm LL R q 50.0 cm 50.0 cm 50.0 cm L pq f = +− 100 cm Similarly for the other lens, = − R p when 25.0 cm = , and . 33. R f = 3 cm (a) Using the lens for the left eye as the objective, 50.0 cm 1.50 33.3 cm
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