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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 film 5mhvk )e;c e. 2g wdwq2gt7yd/is exposed in a camera is determined by 2 k2c7 hddem w)w;/.gyt v5qegthe

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the3 hidm b7um18u film in a camera is determined by the

Correct Answer:    
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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 varied by slcst mc wzn5 )1lkk.p41iding the lens forward or backward with respect to wkcl psz)c5tm1n4 k.1the 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 m.l.s.kvl n4pkm 4g1 m/a/jua film with a field of view that corresponds approximately to thsm v 1l /ku/pg.a.lnkmma. 4j4at 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,2t k9m:zf qes like a telescope 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 covfsdy;)/tryrg on1/dw*g v+v g5d*w 2k ers the film with a wider field of view than that of the eye and through which objects appear smaller is redwg g;fv/2 n/tkr*ygv*+dd s5)1orwy ferred 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 different from the human e.xcywn/ 1b.q:.qealgv g/ n7hye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light by the eye ociv(agj 3geq7 71 ,vhm +i.umcbh (b-yccurs 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 clearly irp( 8reg bj::hmu0pf 6s

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 cawn3a6 k+ 3uggmn see objects clearly 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, a5xms9.,c.fk c9u40pz jpi kuthe person is likely to suffekumu i5skaz cj.,.f9 xpcp904 r from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually hqc3+dt2by8o3nfua4l: fry7qq.e0q be corrected 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 gmn n/axjqzgt)9x8)h ksl4w 31ives rise to a vision defect that can be correct)lkz1/xgjn 3s xahw mt)9qn84ed 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 person ikwb/* gf2 mffa 6ofhjr+yr03 /s likely to suffer f g*o/3y6m0 brffh/krfw+ajf2rom

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrm i(ywju* vs2b72-mrl ected with

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too yzmtb .( nl /c1 ua;,m)kvr,dpshort from front to back, this gives rise to a vision defect that can be corrected b,;,u b nctzpd.ayrkv/l(mm) 1y using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifying glass?tx :jf35e6x7flrnsu/

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very large diameter objosaz4 -0z3lx zb7q 3adective in an astronomical telescope ozq03-zlzbs aa4d73 xis

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a ref52::ax9bwg6l nce zd uracting telescope. Suppose an opaque screen is placed in front of the lower half of the oblzebwca: 29g:dn6u x 5jective 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 throughout the visible spectrurxzu0hz z+zv3p u,k( 5m, in which of the following cases w0rzz, kup5zx+ hzv(u3ould 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 m-ek/ )rsgt: jhm gn ku c+v-wl+l6rt,,l,le9n 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 expect to be able to see the greatest detai 9m5hu lanc ht,2s0 *a1+ mvsfdge,4u/zak,bml when using a micro v9sg* ,t/u5am 4ase0 1u,h nbcz2+klmh a,fmdscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer ;4 zf(nmialchws+//nla,f 2nb f a/-xfrom

Correct Answer:    
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Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffei( cldfxqz+z2;q: *d zr from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of kh it7yxax( ;u+ )u3oua microscope 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 doui5fjg;o mlj +))jnvj 2 pqn33tbled, what happens to its resolving power assumin)qj jifgo)njtpv;l j+32mn53 g 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 h(gkpq8;uui2 b lk.b p6as a far point of 18 cm. What lens (in diopters) will allow this person to see disuklppu2k q g.8(;6bibtant objects clearly?

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objecv q46.uka y)q* kn9wsets more than 70.0 cm away. What power of lens should be prescribed if the glass is to be worn 1.00 cm in front of the eyeuekk)nya q.4s w q6*9v?

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. 3 ;o1gg8eeew /:qldrx What is the person's far point if the g:g3lwqeex ; d /rgo81elasses 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 neededyit9 o+a5kg 5h to correct for farsightedness where the uncorrected near point is 7y5igkt5 a +9oh5 cm?

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. Shemmxdyzg oi 6n9o; 1o04*n :yzk places reading glasses close to her eyes, and with them she can comfortably 4gox16:*kzmoon9m ;zy 0yi nd 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 newspaper held 25 cm from;r oms,h s02 ,vcdo.t- 5zoqqu his eyes, if he wears glasses ofzh0u .otsov; cqrd mq,2 5s,-o
+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 /sku8 2+pfxq n2rfyt-a focal length of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person whe/2k fsfrn+8ty 2x puq-n 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.zb g(;8r9t0sdvfra,j A person has a near point of 25 cm. What is the magnification ofa,v0rt; gd (s9zb8jr f the 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 cm. What is the magnifi+f a/9 xt+qrwrcation if the image ir a q9w+fr/+xts viewed by a relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a conv f:ua o7ut :q1vd6sk;3n bqp4qerging lens of focal length 5.0 cm as a magnifying glass. What is 3 ;oq4skpq dvnu6buq:7:fat1the maximum possible 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 ma x9z:ol g:aog98f ic.*p45wx eayzt(fgnifying glass. What is the magnification if the person's eye is relaxea zz(coffp4l:5xge.:ix a9g9yw8to * d?

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,0q (5jn7xv g*vl4rz qs and 16.0 cm. If yor5xz0gljq 7(v sqv4 n*u were to use 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 pkl io c)gs/f7( jbq0x(kdal( :vx(k) cm. If you were to use any two of these lenses to build a telescope, what is the lens separatikd icxop/k(ljsbf(k:a (0 qx7l )) v(gon 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 and its eyepqy u9.ywir.z9/2g vk piece has a focal zky rgiwp. u/y99.qv2length 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 magnification of 10. v42yll012 mtx uczv2qbeh d+9If the telescope has a converging lens of focal length 50 cm, what is the focal leqhv202+ v41xlu9bmyt lze2d cngth of the eyepiece?

Correct Answer:    
Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomicaltgk(eq;iqk:v4akg ag23v2ffw 9m5 . d telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting le. vkqgtgwf:92 a gvk mfi2dk;4 q3(a5ength 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 t+;c)ysr* gjzstjrs1 ;elescope. If the telescope is limited to a length of 20 cm, what it+)rsy1 z;g j*s cjsr;s the approximate focal length of the objective?

Correct Answer:    
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Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lens of focal lenggd1 g+wbg6b)xubz 1,gth 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 objectiv1bg6zb ug1 , xb+ggwd)e. 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 obj rok7gu*su qb;6me(zg1nu57ln08 ) niof toj9ective 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. What is thek8gb eu ronuo5 9)z tug0s nioq76*f71ln j(;m overall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an objectivet d-lnp4ak wh.u92l7l uq8l+ z k.uwz2 with a focal length of 3.00 mm and an eyepiece of focal length2t4l8 a9n7ul.wzkp.h-wu kl d2 +qz ul 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 k6 a(c.zg8wd hand an objective with a focal length of 8.0 mm. What is the 6k gwda.c8(h zfocal length of the eyepiece to give 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 an av:a)1h;vcqqgular separation of 10-5 rad. If the wavelength of the light from thq): qva1v;hcae 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 objects which are 0.010 bgc ti4; dz)s1mm apart. If the focal length oficztdg;b1 4s) the objective 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 changes from a diameter of 3.5 mm to 1 o/s(7xp sor4i.5 mm as the illumination is increased. By what factor4/x(s7poosir 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 orbi 871:u:um *rhczywe qnt by the space shuttle. What angular re ey r*chnz:1w:8uumq 7solution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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