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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 shutter is open and thgeec/cah3skvnb 2 64 zda) a1,e film is exposed in a camera is deteg ac6/2z 3n,eak d1ahvse4b)crmined by the

Correct Answer:    
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Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light r pvux,if*tv.4e . kydrie8 f,2eaching 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 benv3hzb;:po74 ra hf;t, ehib1 varied by sliding the h, tfh o:r; 4 pznh7eb3a1;bivlens forward or backward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtained, this means that

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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 dx-8ha 6;p8x )lphom aj+sgq2a field of view that corresponds approximately to that of nxp2q8 8aplx +as6om)-dhghj; ormal 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 acn/nx .me3jgim 1+x4dm ts like a telescope to 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 widertc 2vg fdwm/3e4 )21)xut,-bc fveex erb:bk6 field of view than that of the eye and through which objects appear smaller is referred toxcv x2) v1wkf eb 2e,)r-4ttgcb:6uefe /bd3m as a

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the following ways is ae7 xo-dr0wb55i2k..qj uob rm 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 56cpq+c;u rq+,mk/w q g+miub the

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye can see oiojhl:f b i eu1w;u,+x, u:uz/bjects clearly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye can see ob:)p gl g4* ilq ghiq6hyplw,9*a: /hccjects 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 fronrp: k)b+u939xtmt v:7 ik6 tmav mn7dm*ng qw3t to back, the person is likely to suffer froma +mkg mdq 7um7)69n:b93wvtixk3*nt mp :trv

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corrected wioyqu7n+ccuo*/vuc : 6 th

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is -v2kc sdcec14 zn*9up+t z:rm too long from front to back, this gives rise to a vision ded-n1z*4z tckpsce9v :mru+ 2c fect that can be 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 shorzxc+ lz;pz +t5t from front to back, the person is likely to suffe z5xz++;zlt pcr from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be czr*peb y3.ok.yl 7i8lorrected with

Correct Answer:    
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Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short from front to back, this gives rise +bz dmo2 )cl5e.v+wc qto a vision defect that can be corrqcmbde +o25z +v wl)c.ected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a m hf(dn2cqo.u 94-i9fjhnb -xlagnifying glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very large diamp hekaqh.7m* 9jqt mo021rt:beter objective in an astronomical telescj1t qr0.7bpmhh a 2koeq:9mt*ope is

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Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed bzwl; diz+ag /zlrs0 .qo*7uj/y a refracting telescope. Suppose an opaque screen is placed in front of the lowe 0.rzlzaod+zu;*iw7 /qs/ gljr half of the objective lens. What effect will this have?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitiy9nr /,bjqziba v (g12be2ni;vity throughout the visible spectrum, in whi q 2,ba9;n1vzj/b ngbei 2(riych of the following cases would you be able to best distinguish between two closely spaced 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 a magnificatiop1s.t* rtlyg*ch) sg/32ki kp i2j6 tdn $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

Correct Answer:    
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Mark Problem
22#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  With what color light would you expect to be able to see the greatestycj 7474 m)/pagmxy2 4nlpfqw detail when usinggf p)4 y7 /q4jlwpyxacm2nm47 a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses sufferli qu(j +bw xlg6;cln* ;;2hhz from

Correct Answer:    
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Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer ff+t(ro6osioj m-f 9 93pl5 qcgrom

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope referspsbv9kj 53pj3 to the ability to

Correct Answer:    
Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of a radar dish is doubled, what happenwj8sz44wgw +q s to its resolving power assuming that all other factorwjww8 s q+4zg4s 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 of 18 cm. What lens (in diopt:xej bzya+*4u ers) will allow this person toye:x4ub+ja z* see 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 power of le5q wg4tlls9p7w 5 ds,rwbcd: 1ns should be prescribed if the glass is to be ww7 td5psrd,wq:llsg 95bc 14worn 1.00 cm in front of the eye?

Correct Answer:    
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Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted person wears glasses wh4 b8d 2 fwlavu2w3*aozose lenses have power of -0.15 D. What is the person's 3 2*zbad4flw8a2wuov far point if the glasses are very close 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 ye, a qv81;f( .hf jhk.)oudyufarsightedness where the uncorrected near point hf8..,k vdo u1 ;y)qhy fjeu(ais 75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted person is 100 cm. She places read :kyx y9pg,n f5,.eefwing glasses close to her eyes, and 9 pek y5.fgenf,,:wyx with them she can comfortably read 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 wears g1 we 6ix(ty0pelasses xy6ew e(p10 tiof
+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 cm. A person has a near point of:k/ jmon 2tre: 25 cm. What is the magnification of the lens for that person when tnojt:2em rk:/ heir 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..znesl3q +mu; A person has a near point of 25 cm. What is the magnifsmen qu+zl.;3 ication of the lens for that person when their eyes are focused at their near point?

Correct Answer:    
Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass has a focal length of 7.0 cm. What is the magnf bw/e9v,ugh kii* l8kb-y1 i;ification if the image is viewed b9 ;l*8e1 biwy/viibkh,gku- fy a relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focal length nc3i bg(-sut 75.0 cm as a magnifying glass. What is the maxis-3nubit7 gc( mum possible 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 5.q a 78;,2us0.wtaz( iezyfgd h0 cm as a magnifying glass. What is the magnification if the person's eye h87 .zsi(;fga ,dzt2eyawq0 u is relaxed?

Correct Answer:    
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Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses ofju:4tg2 96xz6yp(su7 bpb hep focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you werx4h6 s7pyuue9t2 ( bb6zpjpg:e to use any two of these lenses to build a telescope, what is the maximum magnification 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 cmy29z w1bw5i el, 8.0 cm, and 16 cm. If you were toyzl1 5ww eb9i2 use 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 lengthnic )-1 nn)vx;4puvnk of 200 cm and its eyepiece has a focalnxv 4; -ik)u1nn)pcv n length of
1.1 cm. What is the magnification of this telescope when viewing an object at infinity?

Correct Answer:    
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Mark Problem
41#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope with a magnificatiup vo8.il q:u0on of 10. If the telu .v:8uiop lq0escope has a converging lens of focal length 50 cm, 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 astronomical telescope with a magnificig76y(*ik,ybk jg +phation of 10. If the telescope has a converging lens of focal lengt*k7g+ p hgyi6 yk(b,jih 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 limited to a len/coq3/q0 jq5f1zmhw fgth of 20 cm, what is the approqfh 5z03w m1ojfcq//qximate 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 a 9 89wfbubl*gc)xpp5cnd an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. 8b*cwxfug l5 cb 9)9ppHow far apart are the lenses?

Correct Answer:    
Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lens of focall-s g* ocxf-q6f+pf 1q length 1.4 mm and an eyepiece of focal length 20 p+lsfq*-xqc gf6of-1mm, adjusted 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)p-gvp swo;d 6 objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separavpg6)p; dosw- ted by 40.0 cm, what is the total magnification?

Correct Answer:    
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Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a uj*a3ym0sx duy/wm9p8i m ;6 +xs4 /3jyr hsco18-cm barrel and an objective with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a/xih/mym+ ;jus8xrj34 * uw 09psd3ayocym 6s total magnification of 240?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constellation Orivt j f)jc(l62h3ufi3von has an angular separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallest aperture (diameter) telescope that can just resolve the tw v v62( lfciju)3hjt3fo stars?

Correct Answer:    
Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is designedavr9iy i.n/ebez6 : .d to resolve objects which are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of light used is 550 nm, what is the diameter:daev ni.9ei.zbr /y6 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 person's eye changes from a 4j6lwnhtc 1suqb (:m)m)v.cg diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum angle of resolution changem()l1w.qc6t b)vc4n: hj umgs?

Correct Answer:    
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Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting/hurbx,9 a:b f8;f z pi-zwmo, Hubble Space Telescope has been placed into Earth orbit by the space shuttle. What angular resolutioffp;9am bi, -,uxbrzz/ w8o:h n could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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