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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 shu;9hla m tvk +buzu41m0tter is open and the film is exposed in a camera is determi vmt bumh1l+4zka;0 u9ned by the

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 hjexqan k8/n)+o7yp .yf 2s6 n ij6qk*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 tg- m4npjc v0,g yqmy*w m1hpg*q3 i*zper7a;/he lens-film distance may be varied by sliding the lens forward or backward with respect to the camera h;y gih gmrpw/q4ay07mp *zmp*jc-1 ,g evqn 3*ousing. 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 film with a field of view that correspon-cunys(n 1m4mdd; (mts t45t tds approximately to that of normal vision is referred to at;t 1 d(dms4-y mt(nsunct 5m4s 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 imagw,y 4 : 73nw/nmybwmyxes 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 +lq wrfr ulrn0;no5/ hz.). axof the eye and through which objects appear smal;an z urr0/l.x.f )owq5n +rlhler 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 differen8 zti ; poy/hw5v+liq3t from the human eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of lightr pq23yn0h )wf lb,dv* 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 a6i 5hb vr1a*nas6q3g lod*vw2t which an eye can see objects clearly is

Correct Answer:    
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Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye can see objects cik6g33tfcv q.3j 7qt*sq xj;klearly 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 bbq7: cohyk8qf;g 6g;s ack, the person is likely to suffer yq kb6:;sq 7gc;ho8 fgfrom

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be cocx7jiw.+p ;ta8r7 xcbnnk/ t0rrected with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long from front to back, this givesf dcv(j b/a-rq8- 7nen rise to a vision defect that canen-jnv78/c dbaqr ( f- 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 short from frabxe(b ls521hbrm; +z-j )cu pont to back, the person is likely to suffer fro +el bhr-2b( x1aujb;c p)sm5zm

Correct Answer:    
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Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected0rafm 54it1gl;zrx s7 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 givee.rm+vo zu :2ys rise to a visiovy2merou. z +:n 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 magnifyirc roj1d+/+8 omluo;lng 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 objectiv6a 985ykaujvzg g5rb p;ct .x(e in an astronomical telesc5.u (kjz8vgt 9bg5;6ca xryapope is

Correct Answer:    
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Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a t 0/8kwvg mcmn(9y0mp: zkgz )refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. What effect will vm g 0zmn/kzcg80)mt9yk(w:p this have?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitivity thro-*vmk 42 +cnlfigae+e gghugfl3,b ;: ughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (T:f mg4v- ;f3g a+nu g+*eglhb ile2kc,he 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 magnification 5wtmx ci -x-6i$m$. 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 expec1f2lxh7 adoh 1t to be able to see the greatest detail when using a microsc 7flhdx1h 1a2oope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suff+jky27 a 51ohj2qeg vg x7.owser from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffqhfj6* e (71ergia+zlov(shp7z/ ie0 er from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope re+v 1. iuq cy.hjmpd.)kfers 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 doubwwdzsz2 hkv x 9gl*x6)j q2yn.13lh.bled, what happens to its resolving power assuming that all other factors remain unchanged? Its resolving p zhdv bh9.l 6j s3w1z2x qx*g)w.ylnk2ower

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 c6tctm989 h :i*lr qecrm. What lens (in diopters) will allow this person to see i9lc9:r86mhctre *tqdistant 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 cld8ohov 1i/4l67h ug gm away. What power of lens should be log vo1 h/ud8i 6lhg74prescribed if the glass 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 whlg z3 3nlek(hx6 oi,i6 uxd/rl/.cou +ose lenses have power of -0.15 D. What is the person's far point if the glasses are very close to the eyes?o u/3oe+x(6, .nl6izd3ucxlghikr l /

Correct Answer:    
Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed to correct for*0zh 1(au-zk ueat;ax farsightedness where the uncorrected near point is 75 cm? hu-0auaxtz1zeak (;*

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 reading glasses cloher.,mzd ;kh-1 msc;w se to her eyes, and with them she can cochd-km;w 1z.h, ;srem mfortably read a newspaper 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 he/z fnzf bh)0l*c2w :; sxelbm8ld 25 cm from his eyes, if he wears glasses * bfwlnmxz )8 2e:b0cz/fsl h;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 hxq,a:+ q2a b4ky0eb kaas a near point of 25 cm. What is the magnification of the lens for that person when their eyes are focused at infin,:0ak2 ebxy+4aq ba kqity?

Correct Answer:    
Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focal le6wmzq h:m0z57wfnd 6l0)psjrngth of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person when their e5s dh0m n0 p:q6fm )jl6wzz7rwyes 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 lenc-f2e 9s x1h t6g0qiwbgth of 7.0 cm. What is the magnification if the image is viewed by a relaxed eye? iq1c 6h2ft -9eg0xwbs

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a convergin w( rw fqb(diu;vvnf*sowq.83*v99 lg g lens of focal length 5.0 cm as a magnifying glass. What is the maximum possi uf*wwv*9nrv9. vgwbq3l ((is f 8;oqdble magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of bk/ 0y8 f/jwhdfocal length 5.0 cm as a magnifying glass. What is the magnification if the person's eye is relaxyd/h k8j0bwf/ ed?

Correct Answer:    
Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal lengl:c oja:o q zkz80n9fia7 pp26ths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to us7 8:2q f pncaozz69akpjlio:0e 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 cm, 8.0 cm, and 16 cm. I:4f 4xyaj fpf /fnd2c.f you were to use any two of these lenses to build a telescope, what is the lens separ2f:x/jfcd4.f a4nf ypation 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 length of 200 cm 1purb/ wb;f-,;ct bmxand its eyepiece has a ,r;-cbt bufxwbmp 1/; focal 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 astronomical tele l +5ot1jo+bf. m;d k1v1yfpjnscope with a magnification of 10. If the telescope has a comjoofjb p 1y+dn+5t1.;kflv 1 nverging 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 1:;i 3p2p xraz.16f pm7 dstgvw0. If the telescope has a converging lens of ;2.g3fx6dt ip1wsz 7 vpp:r mafocal 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 telesco 2ivjo,:2bmzd f1 cfe e5(q9dwpe. If the telescope is limited to a length of 20 cm, what is the appd jz(iod2f,1e cwq9:ef5 bvm2 roximate 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 eyepiece o bix3l5qs(gx*f focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the obiq l xbx*5s3g(jective. How 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 focal qgce4)jsiz2cg w2n -5length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain.2i j-wg24cgz)sqn c e5 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 lengthhy3)g b 3 dlc-frk85n+cz o:jj of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are nd8c-fj l3y:bk)z+r 5ojc 3h gseparated 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 lengtdzi 05vq1q.l wh of 8.0 mm. What is the focal length of the eyeiqq1dz5v l 0.wpiece 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 czi0;lzug va5sw84 h :wk5a z,nonstellation Orion has an angular separation of 10-5 rad. If the wavelength of the light from the system 0 4 nwa8wz;5,ku5 s hlz:vzaigis 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 ismy 3vgk uq):ocju3i /ga3 d)+u designed to resolve objects which are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength g cq+m/ 3y3uv):guikd) oa3juof 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 fj0w3c ,mp *ow3k- brtz0 xar6arom a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the min rtc,x0 w*0wrk po6- b3z3jmaaimum 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 Telesdojpf:nf+v++k-fb. b cope has been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve if the + bdk fbpf:n-fj.+ov+ wavelength is 500 nm?

Correct Answer:    
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