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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;egamxe*3 kb -u7*)k1 zkawrz the film is exposed in a camera is determined by t r1wb;7 *ae)m 3*uzkkekzx-gahe

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the film in a camera is 7e9zvezzayu97q-n )qdetermined 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 varied9 n;xjxoyq(; y by sliding the lens forward or backward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtai 9jo;x(x;nqyy ned, 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 vpd t4-fq1b7:sl gt 6papproximately to that of normal vision isfv : 7 lbtptdgs4q-61p referred to as a

Correct Answer:    
Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts ly 45:nsz f 8bbn9bs2;zvz u-tfike a telescope to magnify images is referred to as a

Correct Answer:    
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Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers thk;p3/h zi99l/xb biyh e film with a wider field of view than that of the eye and through which objects a3pxzi9 iybh/k9h/b;l ppear 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 is a camera differentja tjk 3hii)15 hhc-;uz3a-uw from the human eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light byeq5k wd7 f3in4 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 can see objects bo6yaovn9-pyit;7 :v 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 clearly i s-mtp(vb q9g ).g6xlfs

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 likelysphr /k(t-jy vh(5z q 9axh0x3 to suffer fro 3jxv(xhas/ 5 qkhtp9- hrz0y(m

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually beljfo +mjx.poxbm*2h7 1.) pwd corrected with

Correct Answer:    
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Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long from front t;d. o8et4 0o hyo/rxopo back, this gives rise to a vision defect that can bex8otroe op0dh yo;4./ 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 persotkb qkky ghu01 0ao/56n is likely to suffer k q65agk0h/b0 oyk1tufrom

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be cor axjpl)5 x8r(brected with

Correct Answer:    
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 to a visioyikp9.xl 27zan defect that can be corrected byzxyal9k 7p.i2 using

Correct Answer:    
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Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifyin1, du y99xvq9d(anec tnzz.n /g glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very large diameter objective in an astronomicalojr0 n2ggw5.s telescopj.2ro0s g5wg ne 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 pmers+- y299fxz yrw)cw,gw 0x9ik 0mscreen is placed in front of the lower half of the objective lens. What effect will th29e9x w-09 r ) kx+yrsimpzfmgwcw0,yis have?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitivity thgjl)hb(ej 5-g) hwu8 kroughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closely spaced sta)8k(ej )hbw gghlju -5rs? (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 magnificationxmwiy1 1k(5elgm2b3 z :d.ds p)0ligg $m$. 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 l rre3b+li 0m5able to see the greatest detail when usine5+ mb3 rrll0ig a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses sufferu pjhw gwt/g0;6 (fd,z from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer 9+ 9-ekc-rce s8rlaimfrom

Correct Answer:    
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Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to. bo/ ogpi1 u:jjj ef(fxpc8-) u,7lui 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 happens to its res03 -.,92qnem.ccupas d qek kiolving power assuming that all other fac9m3,cq.sd ak i kc n-2qeue0.ptors 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. What lens (i(ga8y.kvoc8 n n diopters) will allow this person to see distant objects cleara8 cy8gn.(kv oly?

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 a.8byfrk op4*wm :iu ) ;ccy;flway. What power of lens should be prescribed if the glass is to be worn 1.00 cm in front of the *w fo iyr c;cpu.;4l): by8fkmeye?

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 -0.15 D. What i58 lzr(h c/lyx3p ue:hs the person's far point if the glasses are very cly /:ue h8x5(hlrlc z3pose 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 uncorrected -jc-ryuy*n, e( a zl7y6l7kpr near e*rcr (a6y,nl--7 ljkuy zy p7point 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 ;.two.:e zoxtis 100 cm. She places reading glasses close to her eyes, and with them she can comfortably read a new;zot:.tw . exospaper at a distance of 25 cm. What lens power 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 fromyog 2rw z; 6dbtehm/oc03bv(* his eyes, if he wears glass3(60b ro*o;emz/ dg2vwtcyhb es 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 has a near w ck .9:s zctgm5-rsv3point of 25 cm. What is -g s sv5mc9w 3crtk:.zthe magnification of the lens 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 10 cm. A perstkba53 - n0pwi meqo3/on has a near point of 25 cm. What is the magnification of the lens for that person when their eyes are focused at tht 3wb-n5 q3i o/km0epaeir near point?

Correct Answer:    
Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass hasxv/shqk vn1hmn2sl qap07 .h ;)tk 8v1 a focal length of 7.0 cm. What is the magnification if the image is v 1; )vsh7ank.1qm0x8vshq/vt l nkh2 piewed 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 magnifying glass. 1. 7xq-qc8t3h afbucvf2 :3pjmi)jzh What is t 3)xfi.h- qpvf1th3amc j7qjuc2 b :8zhe maximum possible magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens o/z6 mw2t 9,bd ukh,;ik wdxtpym,m,u-f focal length 5.0 cm as a magnifying glass. What is the magnification if the iz;dtk ,u m9m/m ,6d kpyuwx -w2,,htbperson's eye 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 of focal lengths 2.0 cm, 4. y3b;x( mp,hm .l7ayf*yvafr* 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 magnifim;.fbrpy vy,3 *a* flha7(m yxcation you could achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses )owwyi.s0haq -)7z w tm/n7g uof 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 zi . yus)0gwww-7/ htmq) n7aoa telescope, what is the lens separation for the maximum magnification telescope?

Correct Answer:    
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Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telescope has a focal lenaz9 s8m3fm vuxtzd+ ::gth of 200 cm and its eyepiece has a focal lengz:fam3 9 dtzu+:ms x8vth 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 magni*nloil:sj sgy +y( l vnz,2g.l7b/l-jfication of 10. If the telescope has a converging lens of focal length 50 cm, what is the focal len:s+g.nlg j,yyisz ll7j(2 lvb l-* /ongth 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 magn/ agpe b:u5zg7d9 mr 6u8xp n-d(zc7meification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resul/8cp5:md967 gb dmg(pe a n7ux-uezrzting length of the telescope?

Correct Answer:    
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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 w4u z:l . u u-ufxkb1tr*mb5q*to a length of 20 cm, what is the approximate focal length of the objectirzubuflwt *m41kqx5.:uub * -ve?

Correct Answer:    
Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective le1/fyddmp, ))or3 lrqsns 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 objective. How far 3p/1dq s y)md r,lo)rfapart 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 focal leng4hnddiya; fk7*8 2g rzth 1.4 mm and an eyepiece of focal length 20 mm, adjusted fo gy2dr8a z4;dnf* h7ikr minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What 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 with a focal length otf y al:zu-(odq*j: g75 pl3myvf7tk-f 3.00 mm and an eyepiece of focal length(:luq73mlyvf :otf7a jk-dyzt *5g -p 6.00 cm. If the two lenses are separated 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 18-cm barrel and an obj x.n26c7dgf( i ,ep4dpj;auroi yg;t .v3fh. xective with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnification of 24.d 3xei a;uh2gox6vr7in.y4 ;c pt .(df,pjgf0?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in p2wdjvox9suc .s(p: /the constellation Orion 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) .:x vpswo(s ud2/cp9jtelescope 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 y(efd3j a:i9*xjguw5 55y hawto resolve objects which are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of 5 dw9 e:*5ajfaw u jx5yh3(iyglight 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'4mh8 vl gis6r.s eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is ini86gl v mhrs4.creased. 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 Telescope has been placed into Earth orbbb /ub1mam *iq bf87l8it by the space shuttle. What angular resolution could this telescope achieve if the m7ua8mbbf/ilqbb *18wavelength is 500 nm?

Correct Answer:    
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