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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 the film is exposed in a camera is dekspte )l-(:x1wr-px aoy,ms , d:qx) etermined by tk:)1 - s)oyr tsxde,a-m, p xx:q(wlephe

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching thect5/ 1lqv*mgchuela 7u .zadhr2z.7ds*ae8; 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 camer .ck5detyb18x a the lens-film distance may be varied by sliding the lens for1xdbkc 8t .5yeward or backward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtained, this means that

Correct Answer:    
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)kyq vx m,yfelogk:i w5vy/m436k40 b corresponds approximately to that of normal vision is referre i5)3,xvkvlfbw/ mkygo04 4ym6 q:y ked to as a

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Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts like a telescopn q(bjk+);z u9y. azfge 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 wider field of view than that of n(we m89b7 /xq*ew2 ybdpr(npv(y5zn the eye and through which n7nwdmp rp2w((z*85e9y(/xbb ynveq objects appear smaller 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 d*zn1v))q(/d eyl oppis a camera different from the human eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refractiond*v) xlqy 9g9d of light by the eye occurs at the

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye hze;a:l8afc h5uv 95 5yql9 ypcan see objects clearly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at whi ssb 1ix,:*qfcch an eye can see objects 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, the person is likely toub2ez nydn m71z.z/e*lf e.4y suffe*ym.n z/yeb7 z12dz nul.4 efer from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be correctedjq+v. 2j7om gm with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is t3 *cvpgdfq 3n)oo long from front to back, this gives rise to a vision n)g3d3* cqf pvdefect 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 shorgq-kmi6*z 15,8b b7s ekzvg3oifybt 0t from front to back, the person is likely to suffer frt is5fy6-zggb8q *1ei7 k ,kb3zvmbo0om

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected wik w/h2xgiqt6 a.mw0q) th

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 ysr)v m qnz- 1,l( a):nty8)gzd.acerrise to a vision defect tc(z:vaerndn8)sr, )gmyq -za. )1t lyhat can be corrected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifying glass4kayy 5j (a :tvoh09sf?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very larged;87rg 5*b1 t)2mgsv - erdikhxu2syq diameter objective in an astronomical telescg;1qess gd-t*kx8yi u5b hrr)dv 722mope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. Supposeu,)haqz.yur1uw( a4n an opaque screen is placed in fru.hu 1 zwnr (yaq),ua4ont of the lower half of the objective lens. What effect will this have?

Correct Answer:    
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Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitivity throyfn5dihnif bb+l /fcy:6;7 1 yughout the visible spectrum, in which of tb 5+;6iyfl yhn fnyif:17dbc/he 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 telescopigb3g:a 5+u0/)bp :znh s ewlee has a magnification $m$. 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 w45: m sfrf58bm xajzf5ould you expect to be able to see the greatest detail whe 5r: 5a 5mbf84fzjxmfsn using a microscope?

Correct Answer:    
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Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer fr)pmqf1e58iq z. xl-u hom

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors sufferj3.ep llagt/ ,vk z2r4 from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to the aoxs f--wqjuqvt 3. 8f) c6na/sbility 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 happens to itk g107h wd ( 48f7fa1bh. yqw1pludztis resolving power assuming that all f7l8(q7 hz1ia0gfhu yk td bw1d4.wp1other factors remain unchanged? Its resolving power

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.om9n2w qm3;va What lens (in diopters) will allo3nq;m om9a vw2w this person to 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 th3 otmbptzf 9:y t*1u w:5m9asgan 70.0 cm away. What power of lens should be prescribed if the tp: t9m u woaz91*:gm5ft3bysglass is to be worn 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 whose lenses have power of :7/ey6ak j4rvc kcuw,-0.15 D. What is tk4u:ryc a7wc,j6/kve he person'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 coippa:os6i-wi6n mddvp.d1pk:2 i- z. rrect for farsightedness where the uncorrected neas v:i.2z a6oiniipk:dw1d pdm- p-.6pr point is 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 plmcj* /jjk1jc* aces reading glasses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lens powejc*cjj mk/j*1r is required?

Correct Answer:    
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 1 btrj+t;sguulzvxia;3m t9v6 o,m.;wears glzgmvbi3. t61r;uts+xv umt;o9,lj a;asses 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 cm. A person hf 1a7dt;gnehn q+:gy ;as a near point of 25 cm. What is the magnification of the lenge + y:7n;1dhag tfnq;s 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 9tgjj3.hv x(:,zodps nhy00lb06stffocal length of 10 cm. A person has a near point of 25 cm. What is the magnificat.6obgstn3 f j d:hzlt(x0yh0s,vp0j 9ion 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 p d,-oh6fp+opdmzn: . o1gw8z 7.0 cm. What is the magnification if the image is viewed by a86,1+opdm-zfpn.hdg: w oo pz 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. 2 sjguc.kxn7k)h ya:20 cm as a magnifying glass. What is the maximum possible magn: kjx.gu 2cna2)khys 7ification?

Correct Answer:    
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Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focalvlp -pjr -kmix:kd1.)l3 y fh, length 5.0 cm as a magnifying glass. What is the mak1,jvll -3:yk)pmx hr .p-fidgnification 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, and)pyh1nql3r4m q we1n. 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum magnification you c)np 1n.qm 4hl31q rweyould achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lv a 3caqyl7.ru r85bzmro6z 70enses of focal 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 lens8 v3u. 67b0qr orycramz7zla5 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 telescopwmk)0l ftaq;/-i aix-e has a focal length of 200 cm and its eyepiece has a focal length a ;qki)a0i tf- /-lwxmof
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 )rk 7gu(9w jnmo.shg 8an astronomical telescope with a magnification of 10. If the telescope has a converging lens of focalk om gn)gus7r(9w.8h j 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. If 1 *o/p2 +sak,glja)i5dl gtpk the telescope has a converging lens of fi2 goaa,tjkkp d1*s)+5gl l/p ocal 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. Ik4g er 7 j1s9odlmm+w5f the telescope is limited to a length of 20 cm, what is the approximate focal length of the obkw5d g roj7s9m el41+mjective?

Correct Answer:    
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Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lxu;qy7rn5km*1+kg jo ens of focal length 1.4 mm and an eyepiece of focal le7kuxrq o;15+gm*kjny ngth 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. 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 objective lens of focal length 1.4 mm and an eyepiec.6tuaxj -00rcxouu6 he of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. Whac 0.06u j6t- oxuxuraht is the overall magnification?

Correct Answer:    
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Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an objective wimq)y3zk8ftv+ t (m /czth a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, what is the total magz v3zmt)/ 8fmqt(ykc+nification?

Correct Answer:    
Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm barrel u1-pcfj rx(k. and an objective with a focal length of cprku1 (j-f.x8.0 mm. What is the focal length of the eyepiece to give a 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 Orion has an angular sep9xsu0bx/j+m l urq+4 caration of 10-5 rad. Ix mr09+ qcbl4+u/jux sf the wavelength of the light from the system is 500 nm, what 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 toa52,dqt h3phc 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 cd3ha,hp5 q2t 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 3.5 mm to 1.5 mm as6v vh5f++3mc)f:n1fagu irev the illumination is increased. By wh5v v3n+ve+m i afgc:f)rhuf6 1at 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 Telescope has been placed into lp.,nhcw 884c h au1u-7 s/qu(ukk fmpEarth orbit by the space shuttle. What angular resolution couldhn(pmcu8 1/8 f kauul.-wqp4 h7 su,kc this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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