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Unformatted text preview: 25-1OPTICALINSTRUMENTS25Answers to Multiple-Choice Problems1.C2.B3.E4.C5.C6.B, D7.D8.C9.A, D10.B, C E11.D12.B13.D14.A15.DSolutions to Problems25.1. Set Up:The Nis and is expressed as The exposure time is inversely proportional to the aperture diameter.Solve: (a)means and (b)If tis the exposure time, then For Reflect:Larger means smaller aperture diameter and larger exposure time.25.2. Set Up:The exposure time is inversely proportional to the aperture area.Solve:If tis the exposure time, then 25.3. Set Up:The notation means an of N.Solve:A:B:C:D:E:F:The order is B, A, C, D, F, E.25.4. Set Up:means an of N. for the telephoto lens and forthe second lens. The light intensity is proportional to Solve: (a)For D5135 mm11512 mm.f/11,Dmax5135 mm2.8548 mm.Dmin5135 mm2256.1 mm;D2.f550 mmf5135 mmf-numberf/Nf-number5fD.D5350 mm8544 mm.D5250 mm5.6545 mm;D5100 mm3.5529 mm;D550 mm2.0525 mm;D535 mm2.5514 mm;D528 mm1.7516 mm;D5ff-number.f-numberf/Nf-number5fD.t25t11D1D2225A130sB18.00 mm23.1 mm2251250s.t1t22A2A1514pD2214pD1251D2D122.f-numbert25t11D1D2225A1250sB175 mm37.5 mm2254250s5162.5sD5f8537.5 mm.f/8,t1t22A2A1514pD2214pD1251D2D122.D5f45300 mm4575 mm.fD54f/4f/N.N5fDf-number25-2Chapter 25(b)(c)(d)Keep constant, where tis the time the shutter is open. soThe closest shutter speed setting is 25.5. Set Up:The image is real since it is projected onto the film. Solve:Reflect:The object distance sis much greater than so the image is just beyond the focal point of the lens.25.6. Set Up:The image is real since it is projected onto the film. is the distance from the lens to the film plane.Solve: (a)Since the image is real the lens must be convex. (b)For For gives The range of distances is 50 mm to 56 mm.25.7. Set Up:The photocells must be at the image location.Solve: (a)(b)The image is inverted and 3.33 cm tall. so the image is real.(c)Reflect:Since the image is projected onto the photocell, it must be real. Any real image formed by a single lens isinverted.25.8. Set Up:The image is real since it is projected onto the film and is the distance from the lens to the film.and Solve:so This is greater than the largest dimension of the film;the entire image of the person wont fit on the film.25.9. Set Up:You want The image will be real, soand Solve: (a)Use this in and (b)sr50.0180s55.09 cms52.83 m.1s110.0180s5150.031023m1s11sr51f:sr5 2ms5 2120.01802s50.0180s.m5yry523631023m2.00 m5 20.0180.yr5 236 mm.m,sr.0,f550.0 mm.yr536 mm.m5 2srs5yry.1s11sr51f.yr5ym51175 cm210.0223253.90 cm539.0 mm.m5yrym5 2srs5 28.7 cm390 cm5 20.0223.sr5sfs2f51390 cm218.5 cm2390 cm28.5 cm58.7 cm.1s11sr51f.s5390 cm.f58.5 cmsr0.0333 m8.031026m/pixel54.23103pixelssr.yr5my5120.0180211.85 m25 20.0333 m5 23.33 cm.m5 2srs5 20.0763 m4.25 m5 20.0180....
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This note was uploaded on 03/01/2009 for the course PHYS PHYS 6C taught by Professor Geller during the Fall '09 term at UCSB.
- Fall '09