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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 yc2merl2 07 (qtgp m;, bc7llyand the film is exposed in a camera is determined by theb;7 l7cpqrl2 (my0mtcg,yl 2 e

Correct Answer:    
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Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the film in a camera is determined by t0* xxzf+qh3lbh *+vtrhe

Correct Answer:    
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 sliding (8yv7+; e3knmpai jnythe lens forward or backward with respect to the camera housing. If, with such a cam8yymiv3(jnap7e + nk;era, 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 thm4x x0zw bamn4v:s7 r .7oky+xe film with a field of view that corresponds approximately to that of normal vision is 0m: aznvx+ 4x4mxby7r .w7oks 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 magksv *l4wa8k cgd6o: v(nify images is referred to as a

Correct Answer:    
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Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the film wo+5mrz ze,vo )ith a wider field of view than that of the eye and through which objects appear smal )5eo,mo vzrz+ler 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 different fromne q6- mw+0fcjhwm1d7et4 0nm the human eye?

Correct Answer:    
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Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light by the ey/g2aif zkc)z dvi76 0je 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 at which an eye can see obje-, 5 y,. g3mkbsuzrwzk)a)c qects clearly 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 clea p u;/pwttxu:*rly 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, (rqsbq*xwtn p(ba44 ,the person is likely to su(naw b,(x4tpq *b4 rsqffer from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be w :jzl 0xszu0 os-;r9(o3kbykkz z14ycorrected 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 0x1n5:6qlciqtrc+8l hi*p(wrf:b gigives rise to a vision defect that can be corrected by using1r: +ric8pgcq xiwlilq(*ntf h 5 b6:0

Correct Answer:    
Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too shorttrr6iu +(0up fn3a u icg dv36uk+:7vt from front to back, the person is likely to suffer fro6u (:0inutt3akudp c+ g37 +6rfiuvr vm

Correct Answer:    
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Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected wit g *dix -yb.2x*:nscw7p3mx(ov fx i/hvm.a b(h

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 fro5yd*b -)skln qnt to back, this gives rise to a vision defecns 5 *l)qb-dykt 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 magnifyingf 32.p6lqre1 )vdjkr v 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 dios22 oab 9w 6io5lvnjqx-5he3ameter objective in an astronomical tel2x65o9v-lno bsoe h3 jwa5i2qescope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope.rps2as+ 4torpa/, -/cw5o w eir+o(vd Suppose an opaque screen is placed in front of the loacr- svd 4srtro o+ipp/e+w2, (ao/w5 wer half of 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 the visible s2az ce2gf:0fkwa*na(o wdb-8pectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars?cnzboef8* (-waa2k0f2 awd :g (The lens referred to is the objective lens of the telescope used.)

Correct Answer:    
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Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A refracting telescope has a m .lmn ti2xvntn rvuo5a84-)9magnification $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

Correct Answer:    
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Mark Problem
22#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  With what color light would you expect to bu-w0t u2xjtr-e able to see the greatest detail when using a microscope0xuuwr j- tt2-?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer froo(8j v hk35ebem

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer fr fufg if+:l1thn2ads8m; h 5t;om

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope12ynt sk4 (;ag 9kysxu 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 i*hj ah)87dz c n;fpi1- ge;iwos doubled, what happens to its resolving power assuming that all o ;i-8n7p cjoah1*d)h;e fw gizther 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. What lens (i50fh p(/yq8ho ix7gdln diopters) will allow thlg5y80p/ xo hf(q7 idhis person to see distant 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 2 hrvf ntd88(jcm away. What power of lens should be prescribd8(r2 8jv ftnhed 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 weac-6gq ahm muih23 y/.ars glasses whose lenses have power of -0.15 D. What is the person's far point i -3u2mqacg6i. hham/yf 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 for farsightedness where the uncorrected qs7eu:fgc* .nnear point i fungec qs:.*7s 75 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. She places reading glade(f*:z6 yxwlsses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What le:* zx6 efd(ywlns 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 his e)wz 2mbr-* dvuyes, if he wears gl)*u-2vrzm wdb asses 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 has a ne z1z6pqvzwet/o;biq x.;1n*x ar point of 25 cm. What is the magnification of the lens for that person when their eyes arenz; / bxxiev6;zz.owt q p11*q 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 ha5no (9 granqm5s a near point of 25 cm. What is the magnification of the aq59 (o rgnm5nlens for that person when their eyes are focused at their near point?

Correct Answer:    
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Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass has a focal length 8+m ;foeaer-qof 7.0 cm. What is the magnification if the image is viewed by a relaqam r8ofe-e +;xed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a conver/ zt95q0ux7c 6pqyfqxtqta7 1 u2bg2jcj.5 yh ging lens of focal length 5.0 cm as a magnifying glass. What is the maximum possible magnification0 c q7a7ftyjt q xy525pq.xcqtu/92 ugbjz h61?

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 uqce1oz ;uq*)ewp*e3 as a magnifying glass. What is the magnification if e ecz* ;pqe w)uq3u*1othe 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., dcli ,h+i,n*q:tvh u0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to use anyq+thivl,h u,*cn, :id 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 c6,vs+ h3prln8ckz4d of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If vd phszc r3k+ 8l,6nc4you were to use any two of these lenses to build 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 a focal length of 200 cm and its 3 nt0(ejla bjo-c hd;1eyepiece has a focal tahjjo 3 ;bcledn1(0-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 telescope with a magnificatio,z*z5l t*qp8p vp xvu,n of 10. If the telescope has zvp5vt ,zlxuqp p8*,*a converging 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 10. tkt.:5 l6am gq5y-fyk j 0enl.If the telescope has a converging lens of focal length 50 cm, what is the resuyk.yk .6:qla50fnj m5egl t t-lting 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 telescop-)um (zowqp *qu aovi u1-i90ze. If the telescope is limited to a length of 20 cm, what is the approximate f)-0az(mvu i zupw u* -o1qqio9ocal 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 ofa+/fztj u-k2w 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.twk- u af+2/zj How far apart 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 mm and an eyepiece of5m *+s-tzqxij focal length 20 mm, a-isqx *5zj+tmdjusted 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 lensw kz)/1 /gxln/)xtp sgth of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, whaps)1/)slx xz nwgt//k t 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 barre/n)f b3ab /xv:lpyd--r. y7f jbhih(x l and an objective with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnification of 240?. /vb)p yj/bna:fx(f7h xdyrl3b h-i-

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the c*ndhq 0+q;shf onstellation Orion has an angular separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallesn+;d hf s0hq*qt 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 whic8hdb .d 1-ytbv1 vwo7smlk ;i/h are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of light us s/i hv lb7o;-myv.kw181d bdted 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 cg9 p :x wf9rnr-f -nhmde190zihanges from a diameter of 3.5 mm to 1.5 mm as the illumination9x 0 wnr9zff9 -e:dnpgr1imh- is increased. By what factor 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 orbit e/rbyn2a /ry4 s 4lpe:by the space shuttle. What angular resolution could thi: ay /4yerp l/br4esn2s telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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