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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 w: 6g((ajj qb :uv,bpeopen and the film is exposed in a camera is determinedj: ,v(abp: u6wejgqb ( by the

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reach 1ytty onqda8f//i53 xing 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 camer/0 7 rcgh9q:vxldzbz4a the lens-film distance may be varied by sliding the lens forward or backward with reg0dvzz/c r:x4h q9bl 7spect to the 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 film with a field of v6,c -jevhgnr n.oo4p)- / nqbview that corresponds approximately to that of normal vision is rj/vo. cqghbp-o 4n -evn,n 6)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 telescohck h3 l.bl70epe 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 fieldr.l9gwqwo hid:( 1/6n a ivuh9 of view than that of the e/aul 9.:qw dihhw9v( rnog16iye and through which objects appear smaller is referred to as a

Correct Answer:    
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Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the following ways is a camera differ 2zwk-k8o vax3ra 7+aeent 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 x9ok)b2o4iymr* * eh lthe 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 cr ,e cz byo+g.h)xy;2k8anvb.learly 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 clearlrnqnt.(e 9xt;ma *16b,mfui5 xz hed1y 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 i rhl9um1 ojfy7 pl5/yscv92j; s likely to sul/lyhfj95or 29cjm7ypu s;1v ffer from

Correct Answer:    
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Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corr ,4i ym8tw, ;wwf4pty:ya, uuzected with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeballk b lu;-5vo);nirzqq. is too long from front to back, this gives rise to a vision defect that can be corrected by using qqlnv;kzbr5uo .; i)-

Correct Answer:    
Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too shortqyjz-ixf +zvo37ysv ihd5(7 2 from front to back, the person is likely to suoq-7hs+5jii 7d (vfx y3zzv2yffer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be cor3i k8j3 juusf2rected with

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short frg,upm -0x jb5zq. u2cbom front to back, this gives rise to a vision defect that can z xu,bpb502-c gqj.m ube corrected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is wiw94h9 vgd / u7huz6oioa*pbh3bn;9 a magnifying glass?

Correct Answer:    
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Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very large diameter obu-(*(kmptb to jective in an astronomical upmbk-o(* t(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 g-bej9 xq cb(f+dt q*+08w:z wfvug4pan opaque screen is placed in front of the lower half o 0buq9:*v+dxtf z4b- p8wfwg( cej+qgf 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 t gjyu9d) ) h1n5dh8bephroughout the visible spectrum, in which of the fole)uy8dn j1bpg)5hh d 9lowing 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 telescope has a magnificati62 rcaef4k pyny,,s9 uon $m$. 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 sebfz5;y:( z 2lw ei3;nf;c obga(.xjbpe the greatest detail when usina .f:;b f2bcgw3pe5j zo ; (xly(;nibzg a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer /m oxd v+f:pd8 ml+t0pfrom

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors su)x8:ct 2 ,xy-fuyx);bak wb mtffer from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscypocv.q9*2f26 tct ql. w858 vcd bokvx vv-z(ope refers 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 its resolving powe29uj7g:x 8kzooup y+or assuminggkop9ujo2ouz +: 7xy8 that all other factors remain unchanged? 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) wil;gj;dol( jb 4wl allow this person to see joj bg w(d4l;;distant objects clearly?

Correct Answer:    
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Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects more than 70.0 cm away3j; 3y dkmhr5e. What power of lens should be preschm3edjrk ; 35yribed 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 person wears glasses whose lenses have pow.n wp7e:q1i zqer of -0.15 D. What is the person's far point ife1.pqw z7n iq: 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 correct fo8y6a.guph e:tr farsightedness where the uncorrected near point is 75 cgh:e8 at6p .yum?

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. She places readidhk69b58 ri ux(q .hiung glasses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lh 59dqiuk ru8xib(h. 6ens 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 from his *)+wr , zz3q 1ow- 4ktiggbtbweyes, if he wears glasses -iw3r) , qk1w bgwgo*t4b tz+zof
+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 haa 6. .kb, ubbz8k+dqnps a focal length of 10 cm. A person has a near point of 25 cm. What is the magnificauq.n8zk+d a6.kp,bbb tion 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.cqpc 0*bjx v8or u3in 2z ;.otr;hj)2n A person has a near point of 25 cm. What is the magnification of t)vj r8 cip 0nn jto2 3bhqcrzxu;.;*2ohe 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 7.0 k0fugc a)7/ci hz 2j37o7ansccm. What is the magnification if the image is vj7)3 / sig7fkaa c0 nhzuc27ociewed 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. Wf( bo ge95ros h4,vxt6hat is the maximum possg ,sxroh(6b e 49otf5vible magnification?

Correct Answer:    
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 gl(m(qy nr+p3eyhz f 4r(ass. What is the magnr4 z(3yq(mny hfrp(+eification 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,f+1j rz5 -lqvya ws-j, and 16.0 cm. If you were to use any two of these lenses to build a tqaw 5+jvyzj-sl- f,r1 elescope, 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.gct.l-zw rjh2.l 0qjf you were to use any two of these lenses to build a telescope, what is the l0.lwgl.z2c q -.jr tjhens 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 r .i lp5y vy/sb;gqc0:focal length of 200 cm and its eyepiece has a focal lengbpl 0yrc :iqv.s5/yg ;th 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 telescope with a magnificvo e4t./dik7 dz6 px,2x 8aqusf ,ln4bation of 10. If the telescope has a converging q6 puz kf2xd8,xsodv4ta 4/7ln,eib. 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 ux2ho.e 1 uh99ewqvm+telescope with a magnification of 10. If the telemh9v1ueu+q.9w xo e2 hscope has a converging lens of focal length 50 cm, what is 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 10X telescope. If the telescope zz36. fy/tbsznocc.bc(- ob lor 31; qis limited to a length of 20 cm, what is the approxif .bolocsn3/c(-qtz1;r. czybzb63 o mate focal length of the objective?

Correct Answer:    
Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an o0m1cy yk(euq /bjective lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minc mk 0y1(/yqueimum 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 objec:-x bh .l946wic y:p*(emshw zgxlc +gtive lens 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. Whc:.4w9 6gx e-gi*p:mhyl hb+slxwc (zat is the overall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an objectibu +kdky5( ,trve with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separa,d 5+krky( butted 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 ob1+ t9.ckh xcfswy1f17dtp ;xe jective with a focal length of 8.0 mm. What is the focal length of the eyepiece to gixy;p wf k +xdht1.7f9te1cc 1sve 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 separation of 10yl3bq0 5 6s2vrfr: t-d, bi h.r7wpjvl-5 rad. If the wavelength of the light from the system is 500 nm, what 27-tj prbwhv3 qb56:vi 0drlry.,l sf 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 objects which are 0.010 mm aparrc)*atue :;sl0r(znb(fd w8 g 2u,r ggt. If the focal length of the objective is 4.0 cm and the wavelength of light usee2f8l buz* cd0grg(g;) tuw:na, (srr d 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 from a dmhf8 /lv t-,qeiameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minht8,q- ef/ lvmimum angle of resolution change?

Correct Answer:    
Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting :d0 tq9kmhrpx- / c :kr+;dnebHubble Space Telescope has been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve if the wavelength is 5r : k/d :r9;q-p+xnhb0cmdk et00 nm?

Correct Answer:    
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