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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 shuttef 9;4m; xdp1eeuuaj0 kr is open and the film is exposed in a camera is detemf ud;0 xej41ke;ua 9prmined 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 is rh v-,1g :b03w9fgu0g2ovtq tqt, k:gi) dp ztdetermined by the

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex ca03vq h t3c: edjybo(t;3v hpn0mera the lens-film distance may be varied by sliding the lens b0jv ; :t ho3htqy3(vc0pe3 ndforward or backward with respect 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 wi1. 2wymu vk6sqth a field of view that corresponds approximately to that of normal visiom2wuy6v kq. s1n 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 . s clv3b0vo6og)*, kv5 hdcr8k kux/dlike 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 coversizze t1u8f0 v- the film with a wider field of view than that of the eye and through which objects appear e u-8zvtzif 10smaller 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 jqy.h(0oq3qq 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 refrac48dvg3 h0mx pn.em;uhknr;y(tion of light 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 atp8unn )b/ u 86qgj3jnf 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 objectswo-gpg-f n;( b clearly is

Correct Answer:    
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Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball ij1rd t(we31+2mwr /1bltwlbes too long from front to back, the person is likely to sufft/b+21le tww(j3wb1 1r lredmer from

Correct Answer:    
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Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can zfc bt m6-4-+ nhhar*;j6f:tj5bdg qeusually 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 l(f5)1lp0i)+jqunin y xu6g bto back, this gives rise to a vision 5+y iq fgxu)nlj()ib 61l0pu ndefect 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 toyf()(w t yhp2i71lxagyn kzghb 00-3zo short from front to back, the person is likely to suffer f -( g(1ghytx0a037yfz )b2pyhkiwlz nrom

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be correcte;cce* m)lg 7x:zju(du ay5ms 6d 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 gives rise toe:i i e1n*;8mnaqfy:m a vision defect that can be corrected by us qam8*:yf i:mee1inn;ing

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a p e1wdsyb2:/e magnifying 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 obj82ef,f* s6r 0afe ds4sgr). lnd zqty/ective in an astronomical t aq*6d,ress/)r0t8 ff ynf2s4e zd.lgelescope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formvz.4p k+wiw qa9zqu90ed by a refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. What +q0ivzw k49a9u qw p.zeffect 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 througho)iw5 f0 re5ofaut the visible spectrum, in which of the following cases would you be able to best distinguish between two closely space)55 0rwa ffioed 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 ht/rm )ebha) b5as 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 ableo 2 yehq 7xanrmg(d:;7 to see the greatest detail when using a micro27e(qymnxd:ah ;r7g oscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer frn (i u9nmts f4zb**-mbrnf3e6om

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffrkqv2a)4/)/ozzjr w v0ifi l0er from

Correct Answer:    
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Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power ofe*nh b w f9/ cfiwei7l)pye.,8 a microscope 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, yj+5gkbtp8/l: zwj h- what happens to its resolving power assuming that ab8jt 5j +/hkwy-:lpz gll 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 point of 18 cm. Whatdq1c7mhnq--/sizp1 r0s d1wr lens (in diopters) will allow this person to see distant7rdq 1c /0r-wpq -i1zm1ssdh n 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. What pok5f tg0k - p3kqgsw7+awer of lens should be prescribed if theqgp - f0w5+tkgk3ksa7 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 power of -0.15 guyd r;n 3-sct1m(( v ffnx1)dD. What is the person's far point if the glasses are very close to ft1mfcyds vug (3(x)n 1;n rd-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 correcwta4 6akhk54ct for farsightedness where the uncorrected near point is kt acah k54w4675 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a fazast 2e-t3v c;rsighted person is 100 cm. She places reading glasses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lens power is require2ea3;-stt czv d?

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 fro/xio7a ib(0 pmm his eyes, if he wears glop(bi0max /7 iasses of
+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 length of 10 cm.,hu lgw v4(cedeh;92a A person has a near point of 25 cm. What chvg ae l, 4uw;deh92(is the magnification 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. A person has a near point qj-4+vo eq;lk)ag: /cc j5bv cof 25 cm. What is the magnification of the lens for that pc/ 4 vb+ljgekjaq cc-;o5v) q:erson 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 lni g/6uedd: vdhe *t)wkt +u72ength of 7.0 cm. What is the magnification if the image is viewed 7dv2+k6d u*g/nih)e:ett w duby a relaxed eye?

Correct Answer:    
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Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focal lengthc 37xvno ,.+evkfrd 6( qb,yys 5.0 cm as a magnifying glass. What is the maximum possible magnifie n7xsv+ (,okv.qy3r y6b,dc fcation?

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 axtn bavh c/ ;ey4 ij/2n4z;wr, magnifying glass. What is the magn ; xwaieb/jh4vc2 n n;tz4,ry/ification if the person's eye is relaxed?

Correct Answer:    
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Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of z8/4jcfks k4p9p pqu +focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum magnifica k4+sf8kz up c4p/j9pqtion you could achieve?

Correct Answer:    
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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 c( o3srq;nlrfo* bpl7 m7d*j; hm, and 16 cm. If you were to use any two of these lenses to build a telescope,*m jlblf sqhno o7*3;p 7dr(;r what is the lens separation 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 and its eyepiecej(y3g-y 0 dpxrhu/ht myjw,/+ has a focahjm 3dx(,rp j//ygyty0 uh+-w l 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 x es -7yrzr)y ))fln/dastronomical telescope with a magnification of 10. If the telescope has a conve e-df))7 rn rlz)/sxyyrging 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 astronomi234q6n7eothvbt an/: r dulo /cal telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is ntend46l7vtr2b u:a /oho3 /qthe 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 telescope. If the j tbi uwld-rs *;+/cw9telescope is limited to a length of 20 cm, what is the approximate focal length of the ob-bu+wj/;lw i r9 *cstdjective?

Correct Answer:    
Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lens of focal l (i1km+u5n/d jk(nw/u c:jumlnv49vi ength 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. How far apartunvk 1:9+l(vkw ji/u5 ( m4m jcn/ndui 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 mmc fbrz4i w0 .4q)g +he a3g5sjd7f6vip and an eyepiece of focale+g)v06ffbsjpzq4 w4 gii 3 rd5 a7c.h length 20 mm, 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 objeusq:3 7ttqttx0 n 7.u0( boglhctive with a focal length of 3.00 mm and an eyepiece7xt oht0t qn:(u7bgqtl.u3 0s of focal length 6.00 cm. If the two lenses 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 wit5n -zxz2nvqal,3mb (v h a focal length of 8.0 mm. What is the focal length of the eyepiece to giv qba2nm5v, zn-xv l3z(e 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 angu 3pcql yx8;:uylar separation of 10-5 rad. I38l qxuypc:;yf 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 resoql9:4 do7b idai lj0 0b)ny+w9 bxaq;plve objects which are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength ofa9a9 l;0n )dol idi:bby7 qp4jqbw x+0 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(:)t l eje8kcj to 1.5 mm as the illumination is increased. By what factor does :lekj )8 jc(etthe 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 Hubbad hqe:5 rwrzzrgdrs484 w-+z) 9uz)o le Space Telescope has been placed into Earth orbit by the space shuttle. What angular resolution coulgad 4wz)rore-d4ru z z rz)ws5q:+8h9d this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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