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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 srn b) hvl-c;8ehutter is open and the film is exposed in a camera is determined by-lnrc h8e;b v) 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 determined by the f0*ux. vpk(rf

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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 0wg7jq k;/,rfuxd,ajby sliding the lens forward or backward with respect to the camera7jf r0;,/k,guqjxdw a 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 fi0tzqo:; jb-def6e0dabzxpx fok-22 5 eld of view that corresponds approximately to that of n-d z-2 kdxb0bee toq2 zx;apf56o :f0jormal 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 referred to asqx9e p9*vll4b,x2o op 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 field of v;1kvw2snlcayjn*- n .vv,g ; k ij4jv8iew than that of the eye and through whii n,nv . ajjw4 ;vvjvy8ln1c2sg*k-k;ch 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 different from the huidsle -7c) v4eman eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refractj2lwjny. 1 ll1e wpzt)e5 mpl59raj9:ion of light by the 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 :k2r6s4vr q umjqe4 9eop e*pz3.t1ihclearly 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 clearly p1c;(e:.kpd9kkp upbwy2j f ;;lzg :iis

Correct Answer:    
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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 peryfrowi 4yu5 zm -e:igq.0k5n,gp v+ w;son is likely to su,f epm5i:zgvy i .o ;wwu rk+-yn4g50qffer from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be correcty/ , i,s 6d,r aag( wll8e;+azjgeipc5ed 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 nub62v:71 4ujkbiu a na vision defect 46a7ubjkuu 1nbv in:2 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 too shorjakswl lifn*:be /7-7t from front to back, the person is likely to s ikl7 *- a/:ejwbf7snluffer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected withhl74ia t1 /lzdydt7e*

Correct Answer:    
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Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is tojzjun z)-d6 lct; 9on 9g ;gsys5afy+;o short from front to back, this gives rise to a vision defect u9sl9;njj6g ;tf-5a) gzo+z cdny;ys 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 lkfg1fq+5iibp7r k/ :magnifying glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason fht(g. tdl i0hu+;q, puor using a very large diameter objective in an astronomical telescope itdq u0.l ;ti+(hh upg,s

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Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refractin1.xeuod adwb9g b.5j, g telescope. Suppose an opaque screen is placed in front of the bwx.oja udb1 d5,e.9glower 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 hb:4. 9e o mdge6nmqj9yas uniform sensitivity throughout the visible spectrum, in which of the following cases would you be able to best di:o dm9mnj4 geb9q.e6ystinguish 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 magniqxp5pp9*9x p cfication $m$. 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 yof-p4 ;r x(y .sn6idyfgu expect to be able to see the greatest detail when using a microscop;if(nyf-ys gxp4 d6r.e?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer w afupbo*:3(ido l 8w+2jmatwqw- 8, vkqfi :*from

Correct Answer:    
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Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer m.7 5syjpj --grml)/ru 1nodk3kh4h rfrom

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of ah-( dbv, fzub- 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, what happens to 5 .ohb xgm.39 ogv2 d+2 xezx*nit*ayxits resolving power assuming that all other factors remain uncho 3.enthd*vzagiyog2 2 x b9m+ *xx.x5anged? 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 (in dioptjaz.f; gs 46de.wvr+ ters) will allow this person .f4zvs ;r .tgd6ajew+to see 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 away. What power of leb1bkg/;;cn; ldth ve1ns should be prescribedv/1 ; bn ;;ghledck1tb 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 j bq h,l za:xz:ret(;hz6,*powhose lenses have power of -0.15 D. What is t*ez rzb zhj (a,h:q,pl6x: ;othe person's far point if 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 nx5u9 yr4) irrejl5;z,fz k cm2eeded to correct for farsightedness where the uncorrected near por, eyz9z; ciurxkm5j 24)rl5fint is 75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted p e)pf*c+ow6:2eudyz terson is 100 cm. She places reading glasses close to her eyes, and with them she can comfortably read a newspaper at a distance+woe ) cdz*y6fp:2ut e of 25 cm. What lens power is required?

Correct Answer:    
Mark Problem
32#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A farsighted person can read a newspapf:r tzb3 lxg**er held 25 cm from his eyes, if he wears glasses off*xlrbg*3tz :
+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 aw23g/n kcdw0gdz/)y)gyg :/r-snx p q focal length of 10 cm. A person has a near point of 25 cm. What is the magng:y/swcyg/2rq dn d )p 0n)/xzg kg-3wification 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.g ;3v 8xzjh.7h1id5eyccmpcwe( * nw7 A person has a near point of 25 cm. What is the magnification of the lens for that person when theih8d c1(c pg;wce37mwe.v h j5x yz7*inr 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 focalj,y/ *ss)irazvt lb04 length of 7.0 cm. What is the magnification if the image is,aj)bsr zi s t0v*y4l/ viewed by a relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a convergim n+w8ir:+b,f 8h euy a5y2hlvng lens of focal length 5.0 cm as a magnifying glass. What is the 8lu 8:y+, efnvwm2hh5ya rb+i maximum possible magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging l2wir1hlt sum2) +z 7f-5d(qu wusw) ugens of focal length 5.0 cm as a magnifying glass. What is the magm5d(h uu +u2wwru qi ftsw2zl)g 7s-)1nification 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, and 16.0 bu5eqb xu(4vme09p lm32r m8 vcm. If you were to use any two of thes3 5mbvm( evuxe89pb2uq r 4m0le 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 lenseslx31wwi51t.onk59 cr / mitsu of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to use any two of these lenses to build a telescope, 3.smckw r1u1n wl5t 5/ox9tii 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 ey etelo657pfkv(l +x) rjdp/8sepiece has a fox7v8 llopj)6/ k+e sdp5( ftrecal 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 magnification oyr0ln6et8eaw2l gkvhc9 *0 e06onnm .f 10. If the telescope has a converging lens of focal length 50 cm, a 6non*mw2lc0 y rgkehv0.l9etn8e06 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 9 i ,ip0d3 fswnzw:s/fof 10. If the telescope has a converging lens of focal len nwfd/s,i0ps:9f3z wigth 50 cm, what is the 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 t(i4ghbky1+(i +k jxa fhe telescope is limited to a length of 20 cm, what is the approximate focal length of the objec k(a fii14gh(yxk b+j+tive?

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 ;aw (dhu058apqhy(o dmm and an eyepiece of focal length 20 mm, adjusted for minimum eyesyh(ph8uo5 wadd (a;0 qtrain. A blood sample is placed 1.5 mm from the objective. 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 eyepiec+l lv7 2t dxs7+g2sriee of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is place72lv gs xei+strd72l+d 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 objective with a focal length of 3.00 mm and ,.jgdb) (+gkon szq3;/xczm 5a ys d+ean eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, what is the total magni+5a+.sgzbcs mn;d) oq y/(j kzgdx,3e fication?

Correct Answer:    
Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm b)vv5kz r x 5kasevt1d )cxf+n,g (3p(barrel and an objective with a focal length of 8.0 mm. What is(kf,t+nv xv v)dekpr )sb3xgz5a 5c 1( the focal 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 angular separac/5 4d ti6 i/z o/oxa;.rwocobtion of 10-5 ra4oito/b; xro /co5. /zida cw6d. If 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 reox,n iujf501px f63ypsolve objects 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 d,0x xo1 56yff3 nupijpiameter 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 frof x/1 8qqp*xo,u3ctapm a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what fp 8qop,1xaq f tc*/3uxactor 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 Telescokqob97up fz tbeo)*( ;pe has been placed into Earth orbit by the s 7ob(ef)z * qp9;ukobtpace shuttle. What angular resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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