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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 a4dqrcdeoss u e7.d2/0nd the film is exposed in a camera is determined by th2 s. c/drde0qu4edso 7e

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the filmalj0vd++x0qa 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 lecaj/8ng /5nzehcr .3 pns-film distance may be varied by sliding the lens forward or backward with respect to thnzjah5/ rgn38e c/pc.e camera 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 fa is)a0)h124rho nojj9pqn + cilm with a field of view that corresponds approximately to a0anco+ihp 94)q2hjsn1rjo) that of 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 to magnify imagg jh(o1bwln i/7s+7 kves 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 withg xobqxzo1c, pq.g6j95lu*. i a wider field of view than that of the eye and through which objects appear smal ou.gc,iz.1qj9xx o6b p5 *lqgler 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;e4yl- g:qvfjz2t*1h qnrb -o 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 ti.g ip8tfqj,g32q+89 dtlq hpfc.a:jr)h:fj he 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 , lw:9 wxdaf)ooi 9z0nobjects 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 6w(-bc+ vf;am rwjo6uis

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 l,e7 r9+hbqhhy-:ep gpikely to su9 b:h e,ey h7pgphqr-+ffer from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corre4h4hnw kz o74rcted with

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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 to back, u*r9qkxd z:(q this gives rise to a vision duqx qk*z :rd(9efect 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 shorsa7u9 z ; (oe0yo;inlrt from front to back, the person is likely to suffer fo ila9 syuz0o( ;rn7e;rom

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected 8(o mm lmnm25 8oxf3oiwith

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short from frol6y p yr jf;u+:0;yl4xw pt0umnt to back, this gives rise to a visionu0f;m4 twprxu yl;y:60 yjl+p defect that 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 magnifyin3j4e csdst2zj- f4ge( g glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for m7d tgygd.5;pusing a very large diameter objective in an astronomical 5dgp.7ymdg; t telescope 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 yboqg4+tpfo;3 y rv+( opaque screen is placed in front of the lower half of the objective lens. What efy+o+(v 4fy3r ; gboptqfect 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 visiblv+0j nere eo0y4onhmy+ br y+z33q-+ne spectrum, in which or+3ny0-o3+v+eyqyb 4o e0 h+rnem nzjf 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 telesco3.bk 7lb3on 9gt)tw7yc a4nhqpe 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:    
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 gawny(h54)- 0ra fc fd1twc)ev reatest detail when using(t-a5va41yfr )) w0cfhwe dcn a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer frophquyoe 1sk;)6 5h.bem

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer fro 09r5u+chpm4fdb cyy6 m

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 ipd; ezjlyv t p57i(+.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 dish is doubled, what happens to its6j-8 ;5rh agleqokh 7 dvfna2mwyb9;+ resolving power assuming that all other factors remain unchanged? 5a7n o;29+fj;-a6bmrlhy q8gkevwd h 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 diopters) l.b:akim(9r 6 +zn xxp 5fxzh5will allow this pehxi (mxl5k+zp 5ar9xz 6n: .fbrson 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 than 70.0 cm away. Whate0bnyrl : *eu58 vj8u 7y+mvfc power of lens should be prescribed if the glass is to be worn 1.00 cm in front lv f*m by5rucv: 0uj87 e8ne+yof 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 pow gav)a gv /p.3scvc3p7v1im/aqz; l6per of -0.15 D. What is the person's far point if the glasses are very close to the eyec zg1gpi;sm )a/v/ 3vva 7pp6qv.3lacs?

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 uncorre0: uov- f/*vayo9yv njcted near point-*0f uov:vjn /yyo9v a is 75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighta 7u;.;qpoa1wll0jy -phz*og ed person is 100 cm. She places reading glasses close to her eyes, a 1gq-0h*zj.ul ppo;;oaawly 7nd 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 newspapeunzvdgv0 q ncrkf/ok2-k8, 9( r held 25 cm from his eyes, if he wears glasses of/9 g ud,o(fk zq knnv0k2rc-v8
+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 lengfy id2(0 x)oyphb2w* xt-x2f lth of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person whehx)btw 2lf0x2yp-( 2*yodxif n their eyes are focused at infinity?

Correct Answer:    
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Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focal length of 10 cm. A persongtgz ke938jb.o5b p:w has a near point of 25 cm. What is the magnification of the lens for that person when their eyes are focused at their near 9zkb3bweg5:8ogj . tp 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 magnificgef9chm7 p8o3xwo 5f,ation if the image is viewed by a relwfoeop,g7 cx3 mh 5f98axed 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 magnifyix8*uilmh8h9 e2urbg4(sq t8fng glass. What is the maxife g b9(u r*lh8t48ihqs 8m2uxmum possible magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging le*q)a9mwqvghf 0foyi yw wl /y2 q+q:8np 3k;)uns of focal length 5.0 cm as a magnifying glass. What is the magnification if nw)wfqwi q9vog2 yf08l/qk y+ma:puh)*q; 3ythe 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 16.0 ad3ck.smrbbz v: 78 us)+hem5cm. If you were to use any two of these lenses to build a telescope, what is t:s5mb.e3szad) 7 bmh kvr8 u+che 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 cm, 8.0 cm, and 16 vyz-p +*q9g2fdr y;hb/u. 4 hcam -juscm. If you were to use any two of these lenses to ;bsycg- vj2/4d*r uzapf quh-m .h+9y 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 )9kvsryoe-b ev3- 4(m7zk j hvand its eyepiece has a fom) 4(v7skh3ere--joyk b v9z vcal 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 mchvf)6fks 9sr ;:(j ptelescope with a magnification of 10. If the telescope has a converging len:;k )m 9(svrpshj6cffs 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 astrong ;bm:si te* ul-9btnqx+zl(hy a9:- xomical telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting length of the telescopeuh9 9:mx;zs*ye -+(-g abblilqt tx:n?

Correct Answer:    
Mark Problem
43#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person is designing a 10X telescope. If the telescot9k,y- hpyd4 9 mj99lhv;b jqipe is limited to a length of 20 cm, whatth hjj idml4, 99yvk9 bq9y-;p is the approximate 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 eyews3avnp2 75edh (h,wepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample ieha(2 3es , hdnp5wwv7s 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 eyepiece oie bc+y9,u67f w: oqnof focal length 20 cq7+yuo6wf9: n,ioe bmm, 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 objective with a focal lengndlbly952e4z+az 6 al th of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses a6lbez4l+aydz5 9n2l 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 with a focal lef7ek71yy2 j2gsu phb3xbn5h 4 ngth of 8.0 mm. What is the focal length of the eyepiece to give a t2jx7e n5 4h7u1 bs2bfkyh3p ygotal 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 ax.rgiwzfw*8bh)w+a 40h v3w Orion has an angular separation of 10-5 rah.+x0wz8rfiagw4w) a hv 3b*w d. If 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 to resolve obj mghp7*no7u8l ects which are 0.010 mm apart. If the focal length of the obj8m pu*g nhol77ective 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 chan-ec+vok (c8f: h-u+h:ws t-wz*ytmys ges from a diameter of 3.5 mm to 1.5 mm as the illumina-(shwyfsm -uow ht*ck+-y+8 czv:et:tion is 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 Tele29zwr,wh 48ems ym8hpi,3jv7ghxw9 )7oan u uscope has been placed into Earth orbit by the space shuttle. What angularph ww,7s9mura)n28vg3he 7x ym9o,h 4iu8wzj resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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