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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 c6 vh4 bsjl441rbczm )film is exposed in a camera is determined 4mvh4bj crcb)6 1z4slby the

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching- xlu+a0u2w;al aiv 0q 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 lens-film .yu4) ikxq(bc lyj,js4/1 bs ,,qunu odistance may be varied by sliding the leso )y. syq4jl(qcu/ibb4k 1, ,, njxuuns forward 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 tha0c k;wl7 s3mcu1xm u1(cj wja5t corresponds approxim7 1;ualmwku(5 wcxc10j scm3jately to 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 images is+dzi 6lnxi)t6 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 1qwcwb-p 2 : zwjsyh:9wider field of view than that of the eye and through which objects appear smaller is referred tw- z9j:2:1hcswqp ybwo 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 fro2eq4 ;nw4h(f hapa6s bm the human eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refractq lz9xf 1x2;z zne,xbl)w7u :l :3ttjpion of light by the eye occurs at the

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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 objects c6q(wm ba )6zc. qpj8;mi :i*md-wnledlearly 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 clearljjv ikr87+: ,u3uwoc0d5fom ky 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 to i1/4 ggj .dkrh b:gpszm/ *ul0suffer fromg.g0l:mb/ i *zk pr4gu/d1hs j

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corres8,nu-gynoy, 3m/zq *4kdzgkcted 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 gives rise to a visio. 7 wo,w2lbhld1h;cm qn delb7.hdq 1ocw, 2 w;lmhfect 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 tocat(t rgpei*.:8+py m xkj +(no short from front to back, the person is likely to suffer8tjaec+p( .y ngptxik*r:+m( from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be cor +aioc.y cg3r;rs6d,crected with

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 rise7m it (lpuwh/1 to a vision defect that can be corrected by m( 1il/huwtp7using

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 magnifying glassapu.je; t b q:k)a1+pv 6j8p(:pwb*v gqa+d qk?

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 ym s5 g4(1zy 6 /vbo-xuedtj:u+ji i8uastronomical telescopeovm jydutb-/i:6+i1(4ujx 8g5 ys uze is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. xiyw nfjh 1is+:5 gn3i 101efnSuppose an opaque screen is placed in front of the lower half n+1yff:11 niw 05is hje gixn3of the objective lens. What 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 tlrve7t0 (*j jthe visible spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lens referred to is the objective lens*0 vttl7 jej(r of the telescope used.)

Correct Answer:    
Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A refracting telescope has a mcz0e*or3 * s;xz5wurt agnification $m$. 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 exp* euym cls60x5)t,ryeect to be able to see the greatest detail when using a mic6ee ,tcrx0yyl5 )*us mroscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer fr/w *q,qh/rp yhgq;0z gom

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer frap+u;+v 5 nvi kj,e,ndom

Correct Answer:    
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Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a micro3*+houmlu*bi q.tdz)cl/8 ;le l(ms jscope refers 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 doubled, w2e )1 r4cg vwuir(+x1blhp4e fhat happens to its resolving power aspcxg1 21l ervhrif 4)we(4u+bsuming that all other 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 poi*9engx ow.d u5* -jtagnt of 18 cm. What lens (in diopters) will allow this person to see distant-t 5noexg9ja*gud. w* objects clearly?

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects mo(4m- /kfhq8f(;wiv1knv wfn wre than 70.0 cm away. What power of lens sqnwfv(v8-1 w/ wf(fiknh4k ;mhould be 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 persona-sfsfzh;9..yg oce*6-n pn +e+wpwb wears glasses whose lenses have power of -0.15 D. What is the person's far point if the glasso*.bscp- p .9fg6fhaee sy- ww+ nnz+;es are very close to the eyes?

Correct Answer:    
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Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed to correct for farsightedn43fuawvlxfn 36x qwip 2d:7 x*ess where the uncorrected near poif : 372x3pfwxxdwa* q64 nluvint is 75 cm?

Correct Answer:    
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Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted person is 100 cm. 9mpt7bna 6 7ta She places reading glasses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lept 7matna967bns 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 /c raw7js qv )ora*. ;dxav83e25 cm from his eyes, if he wears glassesv/rra j )8v7a;swqa*e oxd3.c 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 focajuv p)tc9 a);cl length of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person when their eyes are jpac;c)t vu)9focused at infinity?

Correct Answer:    
Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focal lengthn,cv;p1 wj df/ of 10 cm. A person has a near point of 25 cm. What is the magnification of the lensnj;wf1cvp,/d 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 7.0 cmw2e62 ak+(w- /9 5su tgz fa/esqzfs(f,lhwiu. What is the magnification if the image is viewedteu/wsf5-( z2uqfze law s kf, a6i2w/9sh( g+ 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 lwhov8i:s 6b ,n-i,r ujength 5.0 cm as a magnifying glass. What is the maximui-j,,r w6:i8sbvno uhm possible magnification?

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 focal length 5.0 cm as a magnifying glass 6a9 xm.vgjj6t8ddmr k;3 twm*. What is the magnificatk836mttg; dvx d6a 9mjwrj*m.ion 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 cmb89j*ybk cjf9g xir1308 cnnw , and 16.0 cm. If you were to use any two of these lenses to build a telescopign f*1jbxc3k 98b8w cy0jr9ne, 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,i8a-w* 2 njizw and 16 cm. If you were to use any two of these lenses to bzwnw8j2 *-i aiuild 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 ;cc(pdzk07cj 3u1x yua focal length of 200 cm and its eyepiece has a focal length of1zujcuk p0cy( c3d 7;x
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 telescope with a magnificationn zl2d-mqryupdq 81.1 of 10. If the telescope has a coq8runzly .pmd 21-d1 qnverging lens of focal length 50 cm, what is the focal length of the eyepiece?

Correct Answer:    
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Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope wpgf1 oh7e 6*ocith a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what h *o cgf71peo6is the resulting 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 rqs j;08itg ub09hc;p 10X telescope. If the telescope is limited to a length of 20 cm, what is the approximate focal length of tq8 bs r;0;hu9cj0pgi 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 eyep0/ /b1on1gj v0ea bkpsno4e:diece of focal length 20 mm, adjusted fo4bk1:0od pje1eng o/n s0/bav r minimum eyestrain. A blood sample is placed 1.5 mm from the objective. 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 length 1.4 mm and an eyei (2yqjtkumej)f hc 2z* :-r8npiece of focal length 20 mm, adjuster hfcu)*8e t 2iy:mn(2jj-qz kd for 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 of ge i) whci2 bm99l*6pho:xub.3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, wh92bxu9p ic6emhg*.bl:i)w o hat 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 objective with a focal lenzoasdgby . ,zl4* 24ncevb g;s3e m4/agth of 8.0 mm. What is the focal length of the eyepiece to give a totylm*,soz evdabesz.;c4b3ga2 g4/ n4 al magnification of 240?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constellavrcv2h8 cwnt ya4 0.)qtion 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) telescope that can a hr ycvtw)8cn.2v40q just resolve the two stars?

Correct Answer:    
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Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is designed to resolve objectv y77dcelb+- ms 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 dieb7+c-l7 vdym ameter of the objective?

Correct Answer:    
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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 /(w pm+bvhww+ mm as the illumination is increased. By what factor does the minimum angle of resolut/wbwwhmp(v ++ ion 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.ln;n5hu9rtn7uo kcge4 i i9- orbit by the space shuttle. What angular resolution could this telescu-49iuc eitgn ro n79;h.5lkn ope achieve if the wavelength is 500 nm?

Correct Answer:    
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