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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 open7 0jfno7qiwi:3m gvovf 6)z: e and the film is exposed in a camera is determined by mfv ij7 :io7e3 :qn)g0f6ozv wthe

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching9w8wj dis sl6cid-:rag1b 1d8v kas:. 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 q nuzge h679)tt3rtfs (c4/zklens-film distance may be varied by sliding the lens forward or backward with respect to the camera hous h(k34 tz tqcg9n)su t/r7zfe6ing. 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 the0sv b1x pos 0xr6gxu-* film with a field of view that corresponds approximately to that of normal gux06*10pxs bovsxr -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 to magnify images is referred to as ,, (0:/cxcv u3nxsrfu* eo7nwdijcu7a

Correct Answer:    
Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the film with a wider fieq) f:stgm ns30 p0utclt)w8i+ld of view than that of the eye and through which objects appear s cs i+:tg) nw30s)q mt08plfutmaller is referred to as a

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the following ways is a camera different from mv s /z rkr,8i6vv;cik;/tfu: the human eye?

Correct Answer:    
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Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refracti)0j235qpx blvugzd( eon of light by the eye occurs at the

Correct Answer:    
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Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye can see objec qi asr70-xjhsc47 1shts 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 objects o6oo i+-7bwt o ;0vpsruk 19neclearly 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 fr uvqnr5pfllh,dcgi2/p*u)c 9 of+a.1 u j0dd 2ont to back, the person is likely to suffer ofvc*u5uf2l1)pnrgu dj/dp9,d .+ aq lci 02 hfrom

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be fe)how7z s +bg77*nihwq22 tj corrected with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too lon4* (qk;ihtmxuk-f 3sfb6 ro,o g from front to back, this gives rise to a visionm-k soqfx3,r;4b(foiu *6kt h defect 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 eyeballt3 fzs4g ia7.tw ku41)l8bdjy is too short from front to back, the person is likely to suffi7bwad 43z8gkfus4t1) jl.t yer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually bec +j0 rtlsqe*fv.-o /c corrected with

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is d,. :utz9/vy0ardgzp; ahg;m too short from front to back, this gives rise to a vision defect that can be corr; ./r dapv9zda:y0tgh;z,umgected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifying gw6il w0 z2c9 jf dt;sjof0t+g(lass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very larn sqqtakwy e7l f:b/57k1f-l; ep-y-qge diameter objective in an astronomical telescope i yeqlk ;tfqfn sakw/7q- y7-5p- be1:ls

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting /0sptc3if(z e) ybeo9 telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. Whfz 3ep9 o t/cb(y)es0iat 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 sensitivity throughout the visibl -3njhmt u;thr6f.7sy9o o;kee spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lens referr6.7hfo9u ;rm;tkoht sejn-3 yed 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 magnifi;6 vzw3romjbp /+:)o kzpt. hmcation $m$. 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 greatest detakoy i0 7)w.k*2uepypyil when using a microsw0*y y k.pye7i2ku)pocope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer fct4 :e0ca i1ta cl1dy:rom

Correct Answer:    
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Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors sufferaiga 4d7kt+ 6c3 a;gnzq 0qa;c from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refw;*3 rpi(s22/sl iqmnoe.obe ers to the ability to

Correct Answer:    
Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of a , jd9vgbjt8 dak(kp(, radar dish is doubled, what happens to its resolving power assuming that all other factors remain unchanged? Its resolving ptdd, , bk8v9a(j(kpjgower

Correct Answer:    
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 divki05uj/5 g pza:pbu( opters) will allow this person to see distant objects clejk pu0vabg/u5zpi: 5(arly?

Correct Answer:    
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Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects mt-bxl51e1)8 rib;ytgkqj kdi jq w /(*ore than 70.0 cm away. What power of lens should be)xri 5q11t /-yjj kk(gibwbdelq8;*t prescribed if the glass is to 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 g vnd9bu-4wv3 mlasses whose lenses have power of -0.15 D. What is the pnvw3d 9bmvu 4-erson's 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 farsighte*ivi 9 keg84l :-i nie8g(jhb7l (qqxns +w*lndness where the uncorrected near point is b:liegi j*-gqk(8w h l9i8xi4vn +*s nl(q7en75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsightedd .x5,9grh*t9p */ zrh biwf3 forpk3l person is 100 cm. She places reading glasses close to her eyes, and with them she can comfortably read a newspapr/*9dk* 9tfo,l bi xwp3f 5gz.phhr 3rer 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 hsyg/z1-b 2h 6 zqzdci(is eyes, if he wears gla1 igq( sh y-2z/c6zbzdsses of
+3.33 diopters. What is this person's near point?

Correct Answer:    
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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 owqhm,r ;kc6kc5 a0- adf 25 cm. What is the magnification of the lens;c0h, 5r wa ckk6m-qda for that person 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 nauec;ig4*xjkh *e/ ;j(;v zk 10 cm. A person has a near point of 25 cm.n4ia zhe ckjuej*g(k;;; *vx/ What is the magnification 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..quj7qe/.qr)k7m j- qfheztj1x08vy 0 cm. What is the magnification if the image is vie-.)rx .1 u7/jz0m7y hqktqev8 fqjjqewed by 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 5.0 cm as a magnifyinn1r6qf( 7woql g glass. What is thl76qr o (qwnf1e maximum possible magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focalc,v (),abc 8lm jep5tu length 5.0 cm as a magnifying glass. Wha(ctve c,ub)l5,mja p8 t is the magnification if the person's eye is relaxed?

Correct Answer:    
Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm 1tg33nfb q)y)gcn)dj s 1*gev, and 16.0 cm. 1fngcngy)vjt d1bs*g)3 q) 3e If you were to use any two of these lenses to build a telescope, what is the maximum magnification you could achieve?

Correct Answer:    
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Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of foc xc f+r7wu-1htal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to use any two of these lenses to build a telescope, what is the lens sep tfr7+ucw-h1 xaration 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 le*p(a p-ae- tczngth of 200 cm and its eyepiece has a foc(--zcpa p t*eaal length 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 astrono k)be5m1geh4fb;hy x+mical telescope with a magnification of 10. If the bbfkxyh5 h1+ege 4m;) telescope 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 magnification of 10. I sn/w)n58v2ayw4/u enh kakk0f the telescope has a converging lens of focal length 50 cm, what is the resulting length of the telescope?ny04eu / 5kn wna/ akshk2wv8)

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 2v+ bcrm+5adcab5,jk to a length of 20 cm, what is the approximate fo5c j mvkacrd b2b+a5+,cal 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 fouxud9m9 xm2n( cal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the obxunx 9(mm9d2ujective. How far apart are the lenses?

Correct Answer:    
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Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an obje-w hple:ij z1fc:d (.na:ng8dctive lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the nf c:wie ld.pjg:h81zna: (-dobjective. 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 ,iqd4* wtwri n 6detp;nt2*v6 objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the trnin vdi,w 6tt e*6t2q;d*w4pwo 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 and an objective u9./ars w/x lpr1 b6kswith a focal length of 8.0 mm. What is the fops k//xbu ls1wr9 ra6.cal length of 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 constellation Orion has an angular separation ofnlo1m.m vl6;yom*1 yhl czim.;f 6 wc5 10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallest aperture (diameter) t 61c nm;5 c* i.ml;hml1yvmy6 .zfwoolelescope 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 whic5 v4 y nf-oxx ie:xz,e4aj:,xuh are 0.010 mm apart. If the focal lax :5,e4xzj4vof yx: exin,- uength 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:    
Mark Problem
50#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The pupil of a person's eye changes from a diameter of 3.58 2j g.)tf ar8rkjyglwfu i;9k1 :ov3s mm to 1.5 mm as the illumination is increased. By what factor does the mlr; g8)ai 1frw9u:oj3jvs k82. g fyktinimum 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 Telescope has been placed into Earoh .w 6)zx;oxpbx,- grth orbit by the ;.-xopw gh 6oxzbrx), space shuttle. What angular resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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