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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 is exposed in a cam5ml oh*xx5+ mqera is determineh5x 5qom+lmx* d 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 determined b8.(w:m3mnrr0e 3 )+dbsxap4j p ebvk qy 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 2lug-z28t qp6rr/2b4 hre goosliding the lens forward or backward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtained, this meanp-rt2rqu6rgo lg4 ezh/ob228 s 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 cor r d 7k4sxdccpa9v/n;.responds approximately to that of normal vision is referrep7 9c vakrdnsx4;c.d/d 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 ima3gbnms c0v :+8/hmzxyges is referred to as a

Correct Answer:    
Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers tmofv37 u w6vm0he film with a wider field of view than that of the eye and through which objects appear smaller is referred to as fu w6v0omvm7 3a

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the following ways is a;nk6- u*j nyzw+ ptiy; 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 occurs )w l ;hwp6wh9fat 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 objectszy )x1 i71zkh.1v/ tz(o axovl 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 objects nf4(si ,q*gz bclearly is

Correct Answer:    
Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too lpzfbk+,m 7dwt n 3gw54 -bw7yvong from front to back, the person is likely to suffer+ wpk-b tw7dgm4v5 fz3nybw,7 from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually bg(agk(55dm g a .ru1lre corrected with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long fr acd- ;1k,mp8z.xoanjom front to back, this gives rise to a vision defect that can be kpdc8.;na 1ozx- ,jmacorrected 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 is likely to :knw *wn+ci; tsufferni*k cwnw;+t : from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be correcczz 2,hacpqa(:9l(mmk t - jj;ted 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 ri q85. 7lq2s yasolcjf4se to a visionqc s.oy8j2 4lfl7q5 sa defect 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 magnifyik+w83po2; le omyry(vng 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 1aku;4egupo sepvo 8h/u/6 w 2very large diameter objective in an astronomical telescope g uw;sa /v/p2 u148k ohoepeu6is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting tel*d-e.vij0 69 n0jmi uhol43tsot, mzjescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. What effecemtsmz j349uoh- *0.jlid6itn v ,o0jt 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 through)zhasm e8owe(8 / hqdw)m06krout the visible spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lens referred to i8wwdo0 )arkez q mhm(s86e)/ hs 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 magnificatiodykj7z)/ d ;ygn $m$. 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 exynbr 6c yf+ 2kux)ugo r9o(,q; rcm2o3pect to be able to see the greatest detail when using a microscof(2rrk 96 xqyng c,;cmo2u3y ub+o r)ope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer frsdnn,dyal*6eqc -6dqlho 87l .9i5f3mgn5 m oom

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffe4.az03-oggv,e yjn jzr r ,me(r from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a micror3ndhtg 1,ke * ot:d-fscope 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 happe drf*y 2o x1ra 0mg7smc,qgt57ns to its resolving power assuming that all other factors remain unysd*qcg 71,mf7or2arg0 xt5m changed? 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. Wha3g(hu e/l2jn nt lens (in diopters) will allow this un2(/3gjln eh person 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 ofo5pj 4dhju1. ol1mgy; lens should be prescribed if the glass is to be worn 1.00 cmjh mpgj1d y5ol4.o1 ;u in front of the eye?

Correct Answer:    
Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted person wears gbrl2s;dmv 1xt28j va0c u; cfu l0j x,o8nx0h.lasses whose lenses have power of -0.15 D. What is the person's far point if the glasses are very close to the u8.2n0 bhl2t08musrd;a cvjj cfx;xl0,x 1o veyes?

Correct Answer:    
Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed to correct fobah,8 91f 2ggt e5md 5rvbaa*xr farsightedness where the uncorrected near,bd rxm1fa gg*v t5eb 9a8ha52 point is 75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsived+l z fklq9cdt6) ;/ghted person is 100 cm. She places reading glasses close to her eyes, a6qvz) 9k cf /;tde+dllnd with them she can comfortably read a newspaper at a distance 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 newspaper 4bz-ms likl. ;sj nt4-*u6exov/ 7to6fkbm5mheld 25 cm from his eyes, if he wears glf.m 4-t kbxsil6ts 5- o/zklove*um7b;6m4j nasses 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 near k 3xdgp* )p;em2n idk 3n,x4i;0fxjxupoint of 25 cm. What is the magnification of the lens pim*xx;gexkn4 ,;u3) 0d dpj2kfi3nx 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 of )s +*ycryo4 qq25 cm. What is the magn)q4csqy+ y*o rification 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 cm. What is the magnifld.w; mdh (kg3ba7- rfication if tda-;dwhlb( 3m.kf 7r ghe image is viewed 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 5.0 cm as a magnih fek 7ur2/nv*i47piu fying glass. What is the maximum possiblfi/ 7u n 724reivphu*ke magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converg l xqr*32s2gaying lens of focal length 5.0 cm as a magnifying glass. What is the32qlgsa*2 xry 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 lengsze)cp (;e)qvk.8a qyths 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 magnification you could achieveq);pv(k).c qzsayee8?

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, 8.2 cz9rkw 12 hjv1*bu0mvl+)cggnam v.0 cm, and 16 cm. If you were to use any two of these lenses to build a telescope, what is the lens separu2cwk bm*zavvj1m .0 9gh1gr )lc+n2vation 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 vo (*r9da qu.kof 200 cm and its eyepiece has a focalavo d.r*u9( qk 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 magnificationqz0 58c,f+bhq eotgg0 of 10. If the telescope has a converging loh0e0tz,85 gq+cbgq fens 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 f:*emsep09lv8aj9. nfhw 3 29onsiup astronomical telescope with a magnification of 10. If the telescope e9avs: jw9m pfep8un .3 noilh9*sf02has a converging lens of 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 10X telescope. If the telescoe)yke7 3 z3fe95bon suk:-g-tse 5snq pe is limited to a length of 20nsz3ufe q -kg5n9)tesy-s7:3eoeb 5k cm, what is the approximate 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 length 1.4 mm and an eyepv.qhsq3tr d v.y+4xi8iece of focal length 20 mm, adjusted for mi. qsxi8h y.tv d+34vrqnimum eyestrain. 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 eyepiece of foct*lip*fa w- a)al length 20 mm, adjusa ipl**)aft- wted 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 at q1 z q- uy(mf45rkjnrz)fw9tx0:n4f focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separa-4qt5rtz) z fmuf 1(nf4wk9: y0r jqxnted 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 h t*px*y ):nsyqn c,,fxas a 18-cm barrel and an objective with a focal length of 8.0 mm. What is the focal length of the eyepi,* ,: cnysfx*nxy)tpqece 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 Ori;/: qqx;f*(zzt ii tjrlqv+ qwb:5z*von has an angular separation of 10-;z5 l/q *jrqitvbv q+zw :f(t*qi :;xz5 rad. 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 reso,lz*dm3j*. tj v+pyp,,9ztega 3yy nolve 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 559ao, gm*y zplje* .t3zyy+,tjd3v p, n0 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 1.5 mm as thel ,q5w+s ifhw6 illumination is increased. By what factor does the minimum angle of resolution chan6 q+lsw ,i5hwfge?

Correct Answer:    
Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting Hubble Space Telescov2 ct8mj;+1f(.8e a kolcjf lfpe has been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve if the l 2.fvtk(lff8j e mac ;1+joc8wavelength is 500 nm?

Correct Answer:    
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