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PRACTICE：Physics Unit25: Optical Instrument
本Practice来源于https://webassign.org，是在线Practice的打印版，您也可以访问本平台网站(https://webassign.org/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 324 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://webassign.org/test324.html
 Author: physics  Publish Date: 2023-05-01 10:01    Total Marks: 51 mks  Marks Awarded: _____________

User Name: No Login  Start Time: 23年05月01日 09:35  Switch to Whole-Paper Mode

Mark Problem
1#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The length of time the sy(u j)2nhm. 5 llgmox7hutter is open and the film is exposed in a camera is determine hyull)mnj7g25 . xm(od by the

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reachingbu +a 13-3vmhg vnzq6j the film in a camera is determined by the

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera the lens-film distance may be varieduf27wl2 bqby p9r8 i:lq9 49rbl4zajz by sliding the lens forward or backward with respect to the cqari4zf9l 9 b 824j9p2b :lrulzyw7qbamera housing. If, with such a camera, a fuzzy picture is obtained, this means that

Correct Answer:    
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Mark Problem
4#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the film with a field of view that corresponds appm 5ux k q5ga:wybx246oroximately to that m xyq5 bk ga2w:o56ux4of normal vision is referred to as a

Correct Answer:    
Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts like a telescope toia+ yt;rw o//s6lfwi: magnify images is referred to as a

Correct Answer:    
Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the film with a wides n go)ya+-0bpaktdqsmd 6802 zc0dy3 r field of view than that of the eye and through which objects appear smaller is referred to as d 06dot- n0sza +y 32q aycb)d08pkgmsa

Correct Answer:    
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Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the followingi/awpil l 34t9 ways is a camera different from the human eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light by the eye occurs at the/6k aawf/9z 1de+dmkg

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye can see objects cle 5pi ehed*0sx-arly is

Correct Answer:    
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Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye can see obje 9srea9 dgtm22of jkybt7382 dcts clearly is

Correct Answer:    
Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too long from front to back, th0t 9uh*20kdz/5 rvfofvpog8 we person is likely to sufferzv0gu*tvh28 r9odo0wf /5 pfk from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corr/b fl+uw;jfptvh:4q b1 zst:2ected with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too l4t b;cl-xx c8dong from front to back, this gives rise to a vision defect that can be dbc8;4xtc-xl corrected by using

Correct Answer:    
Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too short from front to back, the persmqei+zno9hl po d;y7i.; kl 6*on is likely to sufnp k9h l7mizqe+*l6 ;;i.do yofer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually g9b k eod)x:d )*;tabobe corrected with

Correct Answer:    
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Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball isoi4d (8k.t(w8k rsrib too short from front to back, this gives rise to a vision defect that can be corr8 b(tr(8r skk4 diiw.oected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifying glassab6g)(t b0j *kol9ik x?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very large diameter objectil 3ccx2j(xegg b+39 jzve in an astronomical te32gbl+(j ccg9 xzje x3lescope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. Suppose an opaque screenx v8thzier.; + is placed in front of the lower half of the objective lens. What effect will thi+ ;ezh8vt .ixrs have?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitivit87ouwb llr /7 e./ y.nbfvt89wchor /yy throughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closely spacewu.7/vf/oeyb roty hw/798b rc. 8llnd stars? (The lens referred to is the objective lens of the telescope used.)

Correct Answer:    
Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A refracting telescope has+/k+r5 atdrq ktkj-* g a magnification $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

Correct Answer:    
Mark Problem
22#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  With what color light would you expect to be able to seerrs*(n+jo *j030nbz n0mi g pd the greatest detail when using a nr rzijn(+0 3om*s0d 0bgnj*pmicroscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer fros0b3 z3efx x/cm

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer fro o/.elzi hjp6/m

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of aw nn h.9vu:zn s2rnt8(s8jb1 w(gya+a microscope refers to the ability to

Correct Answer:    
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Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of a radar ,h xa6r78mk5wose ;kmdish is doubled, what happens to its resolving power assuming that all oth rk5hmw; a6x,oks m87eer factors remain unchanged? Its resolving power

Correct Answer:    
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Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person has a far point rw3 u3/9 *rupho t3z7unha6hxof 18 cm. What lens (in diopters) will allow this person to seer zht nu whua/u3hx9p3r3o7 *6 distant objects clearly?

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects more than 70.0 cm away. What powe)bj4tss; +weaj3ej3d- *whss r of lens should be prescribed if the glass is to j+s*sd 3esa)jj 34sew -thwb;be worn 1.00 cm in front of the eye?

Correct Answer:    
Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted person wears glasses whose lenses have power of -0.11dnr13jr8vqukc 5m z 15 D. What is the person's far point if the glasses are very clu j8cqrz v115k1d r3nmose to the eyes?

Correct Answer:    
Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed to correct for farsightedness where the unci18xmjvz:/;kx mv (st/j3fpnv1 d: f yorrected near point ip/v8 xf1ysjzf;d/ : tvn:1m jvmxk (3is 75 cm?

Correct Answer:    
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Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted person is 100 csg7drh03r r g;m. She places reading glasses close to her eyes, and with them she can comfortably rerg;7g d 3s0hrrad a newspaper at a distance of 25 cm. What lens power is required?

Correct Answer:    
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Mark Problem
32#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A farsighted person can read a newspaper held 25 cm from his eyes, if he wc :mmi9nm c/u.t7/glwpd w d0+;u 0vifears glmlc/ti7cm. d0g;wu:dv/ mf uw9 i +p0nasses of
+3.33 diopters. What is this person's near point?

Correct Answer:    
Mark Problem
33#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focal length of 10*+u1qetu5 s kj cm. A person has a near point of 25 cm. What is the magnification of the lens for that person ekujt5*q1+us when their eyes are focused at infinity?

Correct Answer:    
Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focal length of 10 cm. A4fkb n7s vyah*2x 1t4a person has a near point of 25 cm. What is the magnification of the lens for that person when their eyes axynv 4asb 2thk1*7f4are focused at their near point?

Correct Answer:    
Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass hasd;ma0s 1lypnj hb 9(k; a focal length of 7.0 cm. What is the magnification if the image is viewsb hnk1p ;9ja dym0(;led by a relaxed eye?

Correct Answer:    
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Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of fm li3 zos3*c 5m*uel/eocal length 5.0 cm as a magnifying glass. What is the maximum po3e**oe5clziu m/msl3 ssible magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focal length fd+pjje7 kp3cxtm*yh4- 8w9i 5.0 cm as a magnifying glass. What is the magnification if the person's e3pji 4m7-c j9+htekx w*dyf8pye is relaxed?

Correct Answer:    
Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal l)8dlm0q dj-xh.wgl53a ic d*c engths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum magnificat.hlm3ad05d )-ixgl * qjccwd8ion you could achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0h h xr49fxr-5.n y/i6(l jcnryxq0i s7 tx.t6d cm, and 16 cm. If you were to uyxnxc0- r6 /.nqx lritx9hj4s657rif.( yhd tse any two of these lenses to build a telescope, what is the lens separation for the maximum magnification telescope?

Correct Answer:    
Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telescope has a focal length of 200 cm and its -m0zi ee)o kt;+v0scz2aip i6 eyepiece has a focal lezktzimv ;e6-2+0cs a 0ip)eiongth of
1.1 cm. What is the magnification of this telescope when viewing an object at infinity?

Correct Answer:    
Mark Problem
41#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope with a magnification8u2gf la6(sm e of 10. If the telescope has a converging lens of focal length 50 cmae6f28 (lugsm , what is the focal length of the eyepiece?

Correct Answer:    
Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronwat5:f5u o8q komical telescope with a magnification of 10. If the telescope has a converging lens of focut5 :f8o aqkw5al length 50 cm, what is the resulting length of the telescope?

Correct Answer:    
Mark Problem
43#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person is designing a 10X telescope. If the telescope is liaw50 dqzx*uah5-5q 3jt,hfg9 3khojdmited to a length of 20 cm, what is the apx 0-hj3q5kh5 3 uz5gdh9aj,qa *twfd oproximate focal length of the objective?

Correct Answer:    
Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lens of focal length 1.4 mm and an eyepiece of fockt7mw /-j3oepml:jp:1zzu f *al length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm fmw *ko7pu t1:e:jlfz/ mj-3zp rom the objective. How far apart are the lenses?

Correct Answer:    
Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objectiw*b/15ti1rzi.hgu l(x6 0gnigfjrf ) ve lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted 0*5 1gil1zi ibwrgjfn hr()x/tu6gf.for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the overall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an objective with a focal length of 3cdwn /une/8 i/.00 mm and an eyepiece of focal length 6.00 cm. n/d/e/c8 unw iIf the two lenses are separated by 40.0 cm, what is the total magnification?

Correct Answer:    
Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm barrel kba;/::a5( qjqn(tk/qv o wm sg eld7)and an objective with a focal length of 8.0 mm. What is the focal length og; : dq/om /k5l:q)jea sv(qanw(btk7f the eyepiece to give a total magnification of 240?

Correct Answer:    
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Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constellatioes(k:ebp qrly9p3 :f: n Orion has an angular separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, epk:e3pfq: (y9 :l sbrwhat is the smallest aperture (diameter) telescope that can just resolve the two stars?

Correct Answer:    
Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is designed to resolve objects which are 0.01lj:k(+- v+ wsjj2dhpl0 mm apart. If the focal lek lw:v-jdh +l s(2jpj+ngth of the objective is 4.0 cm and the wavelength of light used is 550 nm, what is the diameter of the objective?

Correct Answer:    
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Mark Problem
50#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The pupil of a persom2lr23 ,aa rru0vq af(n's eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination qrl,mafr02ua (2 vr a3is increased. By what factor does the minimum angle of resolution change?

Correct Answer:    
Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting Hubble Space Telescopalkuegp d (bqz 24c*6)e has been placed into Earth orbit by the space shuttle. What anguae l6*gp2k 4q buc)zd(lar resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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