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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 thryhu8l; ( vgo6e film is exposed in a camera is determined by 68(rovhy;lgu the

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching uc.g n1 im+a2mt9tjeh o8h9 1mdz,3(mtiq +dothe 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 reflexgxun2h gmyh1+ogk rmp*j* ;/) camera the lens-film distance may be varied by sliding the lens forward or backward with respect to the camera housing. If, wih+ )kyg/*oumjx*2 mghpnrg; 1 th 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 field of view that c tk/po di77-goorresponds approximately to thai7 tp-koog/d7t of normal vision is referred to as a

Correct Answer:    
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Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts likee87v 6hxxmj:d hhm 9m+ a telescope to magnify 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 with a wider field of view thanbez 4b oage.) s9 h4.8t;dtoczfegf*7 that of the eye and through which objects appear smaller is referred to zgtbh44o fc .b78* at;zf9edo) eesg.as a

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the following ways xuc5z,* go2 /9cis *bokrl+rjis a camera different 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 the eye occur406w -9bh16lfdgappe 5al izrs 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 j yk8wm,y;,vcclearly 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 erxmo*4 bxyj*;nky4*pagh27 dfunv 5 ;ye can 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, the pel+vx s0-jb4x 32 hyge(xa l/xqrson is likely to suffsj4x eh2v-xxa3/ qgb0yl l (x+er from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be c 777j bgka 3*n5(wg lrqkymculn24w2rorrected 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 slqnlhc5s -4ert9a /y/cn.v 0to back, this gives rise to a vision defect that can be correctedsnc sa5qlc v//th0y-e .9l4nr 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 froek o-hup*32t* . f,pktsly hr8m front to back, the person is likely to suffer y2tu, k r.potk-h*lfs eh38p* from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usuau j./rzcj7ihgbo)p 8 *lly be corrected 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 bac sfi:q)ac)0rak(gv rgtw 1tvs 8aq;. 1k, this gives rise to a vision defect that can be corre)tk iw);s.1(:rfacv8 qs 1qg av0gatrcted by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifh 2 nm t,3eon t,roiijr 3i6mqpe:jdo0o1*;.nying 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 objective in an astrono30d0/ (0dwcpjx *wknqq8cye 0usqqs 1mical telescope jwd qqc s1ydcx(u0*s 3p/ qnw08k00eq is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image form ula8gfcye/w/e:wn 7b r6ow5) ed by a refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective le o/w7cb:l/uy)w 6n5afwereg8 ns. 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 sx4;q i xk6*4 kv,xvfs 3;-c7serteuqfpectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (Thecki vf 6rsxv;4-qux;t4,qe7x *es3fk 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 magnificat23 c ;l*v7hr sobtuzbk88o )nfion $m$. 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 grezfafk9h fu 2q/, 8pieg(/ 5inaatest detail when usin/iphf5/u eaf(g8kf, izq a29ng a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer froa(;wb uj*uf8 um

Correct Answer:    
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Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors su oqn aa88+ mm;trpgw0;ffer from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refekv aj5y,7 o-zqg0h.nxrs 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 (4 -wiu*+)nlgareeh gto its resolving power assuming that all other factors remain unchanged? Its reslh-e+e r4(guia)nw g* olving 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 (:;sexexey+1 zo 61bsgin diopters) will allow this person to see esb1e;6se1xz xog:+ y distant objects clearly?

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects)r7ab-tt5sgxf 5x 4pg0 (iwcn more than 70.0 cm away. What power of lens should be prescribed if th c0-(s pnfx 5)twia5xgbt74 gre glass is to be worn 1.00 cm in front of the eye?

Correct Answer:    
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Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted person wears glasses whose lenses have pc:lzy* (fi,iid( rjs)ower of -0.15 D. What is the person'slidf,yri) (sc*i (:zj 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 needed to correct for farsightedness where the uncoka4i;x rwx 9mw,(zjmyx)-c gd2 2ywx/rrected near)w -x;cgyxxi (mmawzwr/ j kx294,d2y point is 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 reaxai,r : vcug*xigx4kn;tkb, ho,8.3s ding glasses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What len,kit xck rn;ghxv. abg* s:,u83 ,xi4os 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 v1pqeo j,j3s:his eyes, if he wears glasses ofjpqv3soej : 1,
+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:+htv-g 4 s yz5de9kdl focal length of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for tha5v 9tg4-e+sdz:ylkdht 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 jtce/v(k, e* b)t* rbkperson has a near point of 25 cm. e*b*,tkebcvjk/ r()t What is the magnification of 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 skts+dov v +1ah. -+bfcm. What is the magnification if the image is vieweskt+.+ sfoa v-db1vh+ d 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 w vcvd s6p;(m/tnt1+c5.0 cm as a magnifying glass. What is the maximum possible magnifis1(t;mcvnvp d+tw/c6 cation?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converg zb2r)gxp 5p45kaig9ting lens of focal length 5.0 cm as a magnifying glass. Whaxkt g z5ibpa5)p2 49grt is the magnification 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 1tdw5b53 pcmmf zbp9:9k6s uxlw1 9 lo/6.0 cm. / fb61dwpt9p5:9 slbx59 cwmmu3kzlo If you 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 foc85jtylyxgyee908 *,y 8jphdmsixw, p 0*i /t cal 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, what is the lens separation for the mw*y y088j*lejmtgyhi ,9x5 ,yp iestxd8c 0p/aximum magnification telescope?

Correct Answer:    
Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telescope has a/(wo0am0u,ln.j um l3l q7 iu 7ek-qq*myw(cd focal length of 200 cm and its eyepiece has a w- /(*n 07ua3wl(0,uq l q7emkmlmqciod.yuj focal 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 teph7ph,5c h qcfo,u*j sx3 cz*;lescope with a magnification of 10. If the telescope has a converging lens ofu ,;c3xh*zf* ohcq7hs5p,cjp 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. If 6*s,jp40 :ln gnphy) fqp6huxxff 7em 8,1cdk the telescope has a converging lens oppcxpmhfe,xl 66jyf 4n70q) :s ng8,fhdk1u*f focal length 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 1xgpz q 72(0wtl+a 9pov0X telescope. If the telescope is limited to a length of 20 cm, what is the approximpwq 0pgoazt9 (lv2x+7ate focal 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 of focal le/l/9u2src wk+zaap5 4tao(qo 8rq (singth 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 apart are the lensewr cq4+u(s2s ozit8aq(5l /a9 aokr/ps?

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 e6an,z8k) jboq yepiece of focal lennk q8j6ab o)z,gth 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 objective with a focal length of 3.00 mm and an eyrs8)ct6h)egb .42vg k 5wv buyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, what iv)5kr gv4 8 c)g6h2wsybebt .us the total magnification?

Correct Answer:    
Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-c)gny;3qu 324i sn mcgkm barrel 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?i)c ysgg; qnu kn3m432

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 sepr .nhd1;h47un 0vwju laration of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallest aperture (diameter) telescope that can just w0 l.;urh 17j4vhnnduresolve 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 3,k0pwopz.rzx0j mk(i z .wd00.010 mm apart. If the focal length of the objective is 4.0 cmpp.3k(0r.iz0jz, dwmwkzx0o 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 dia)4bt16rq wj,ziid4 w y-czq;s meter of 3.5 mm to 1.5 mm as the illumination is increas 6;yz-sqw4iwci4rqjd)t 1,b zed. By what factor does the minimum angle of resolution change?

Correct Answer:    
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Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting Hubble Space Telescope hap 38z a)jb::pghtk j5ds been placed into Earth orbit by the space shuttle. What angular resolution could this telescopetjhk35 )p pj bzg8a:d: achieve if the wavelength is 500 nm?

Correct Answer:    
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