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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;.x) 42zgibswdrswu2 exposed in a camera is determineu)i.dg 2 42r bwsw;zsxd 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 cam8 s.+oiq ,8o7ggd slf xxq9ki-era is determined by the

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 byde.z*yh2z mv ) sliding the lens forward or backward with respect to the camera housing. If, with such a camera, a fuzzy picturez2me *zvy)dh. 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 tb d7/w7rm*iq jhe film with a field of view that corresponds approximately to that of normal vision is refer7mq7ib jrd* w/red 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 imagesdk/ck sc)v*ag; 7f4l l 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 the film with a wider field of view than that of the1.yq :kzot +tm eye and through which objects appear smaller is refer:t mo+.kt 1qyzred 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 from lxv :i), .2 wclfkjul(fo8v u5the human eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light bu3mel-e cg50 uo +u 8vt9tl 79ktkxrpy.i-n6my 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 at whicho9gby6j(w ykvoen3 1u:4la: 86er npv an eye can see objects 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 clealx+n4jbe/:2w clys8tl9 y sjteb)9k) rly 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 is too long from front to back, the person is likelu5x;lrz l r 1y:ge3ul+y to suffe+:5 rxulgl;yl re3 uz1r from

Correct Answer:    
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Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corf2: o,,un ax*4 qdesb0yep0ogrected 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 to0t / j((z52snu;nlzjn1r :7cshk h2k5fluw vd back, this gives rise to a vision defect that can be corre70;zvl 5(uh :( j sr/ndh1funl sz2 jtc52nwkkcted 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 pe a :.rjqsz4,-q3f oydvrson is likely to suffer from jsov3ay-dz4.rqq f,:

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usuakiic.t6 :23 ygims l8wlly 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 ba3:t7n6nl wqzz ck, this gives rise to a vision defect that can be corre67wqtlnz n z3:cted by using

Correct Answer:    
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Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifying glas.rnfnlzx 3w4 0vw 1d;3xf8 vfos?

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 astr z(q+og ax7sd2onomical telescope iz g2as+7(o dxqs

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by annmhy4. qt9 i+ refracting telescope. Suppose an opaque screen is placed in front of the lower half of the+ i4.mnh tqn9y 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 th x7g oo.rbi4-vnpku, :h5k z-aroughout the visible spectrum, in which of the following cases would you be able to best distinguish betweenn:-bzuivo5 ogk aph-x7 . ,4kr 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 magnification (n9 5a )qcsgy +epnv*r$m$. 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 wouldv7do87gy o;ng you expect to be able to see the greatest detail when using;7o g odygvn87 a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffere9bma v8dke:a4h0d2i75 nl / za dj6rh from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer frxiubwen7+ tfe 7 qy50:7gkw/nom

Correct Answer:    
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Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refe nt:eb)f1h/xp rs 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 to its resol s3d 7znl p76/.vs ij m6u3jnnxxje;j7ving power assuming that all other factors remain unchjj7s/7 6plju xd6vm7;nzn 33jnxi es.anged? 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 lenot j(xb w ,peyt71 d*a7v52vx rqshc6/s (in diopters) will allow this per/6ojt xvv15* bwx (q,dh72pse7ya tc rson to see distant objects clearly?

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see cladk) -gi( ekr;9fcv5 zearly objects more than 70.0 cm away. What power of lens should b;9kgi-5c zvdr(k ea)f e prescribed if the 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 lezijv .p4i j6c4jke m74nses have power of -0.15 D. What is the person's far point if the glas.4mc6z vii j7pj ej4k4ses 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 cor o;w/ru; ei667qzvg7zhsr7m jrect for farsightedness where the uncorrected near point is 7movuerh;i zws;/zj 676 7grq75 cm?

Correct Answer:    
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Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a bmuf7(./ u+tzb)aham farsighted person is 100 cm. She places reading glasses close to her eyes, mfz/ ba7th. )uub +am(and with them she can comfortably read a newspaper at a distance of 25 cm. What lens 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 news)y(pucg86cf:7 hj rgopaper held 25 cm from his eyes, if he wears glasses oj pg78r(ugchf ):6 coyf
+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 gddouv9jy3 s- .aw/i4 person has a near point of 25 cm. What is the magnification of the lens for that person w93 ad-sow.y/4gu divjhen their eyes are focused at infinity?

Correct Answer:    
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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 nevs;q ja-tx2j(; j -nvdar point of 25 cm. What is the magnification of the lens for that person when nq2v v;;(t-a jdj-jxs 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 4xusyx)5 u ;o,bl;e;sdwo.k)ay ycp; length of 7.0 cm. What is the magnification if the im4 );uu;, yx)ey apoclwb5d;s.x;koy s age 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 l5t+k d)s5 (4pdhe ycbbens of focal length 5.0 cm as a magnifying glass. What is the maximum possible myhkb)td+4(c5eps 5 bd agnification?

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 as a magnifying glass. yz0h-;wdi.j n What is thwh-0zj. d ;yine 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 lensv9+s-2) lodvb*sdwww+ag i0c pwm l *,es of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to use any two of thes*lwo9c*+w, adwv+idl 0 sw) vbs2m p-ge lenses to build a telescope, what is the maximum magnification 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 xm/vfu w:*y5v.jc(hh 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, what is the lens separation for thef*(cmyv5 . jv/uh:w xh 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 oj- k1eorkiasep;u/ cu/: 3mu rm(;jy:f 200 cm and its eyepiece has a focal/aik;euo:y/rspm3(cj1 uu- : ; j rekm length of
1.1 cm. What is the magnification of this telescope when viewing an object at infinity?

Correct Answer:    
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Mark Problem
41#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope mme h*3sd /jh6with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the focal length of the esjdh*3mh e6/myepiece?

Correct Answer:    
Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomiccg4l.sk9xd .val telescope with a magnification of 10. If the telescg .l9x.sd4kvc ope has a converging lens of focal length 50 cm, what is the resulting length of the telescope?

Correct Answer:    
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Mark Problem
43#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person is designing a 10 t.:oiriowx0 5+9aw mq+ wyo8bX telescope. If the telescope is limited to a length of 20 cm, what is tootiwq o .:+0ra5iwxwmy9b+ 8he 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 lekatg l2t7l2w z w1vy:(ngth 1.4 mm and an eyepiece of focal length 20 mm, adjusted fova(w122:w ly tlzkg7tr minimum eyestrain. A blood sample is placed 1.5 mm from the objective. How far apart are the lenses?

Correct Answer:    
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 j:43rlb xpco (focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the overall magnification?x3rlbo( jc: p4

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an objective with a focal length9u3 fk 93kh)h 8k.yjewvydm9 i of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, what is the total magnificatfhe .8kd3i9)hk 3jvy u9k9ymwion?

Correct Answer:    
Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm barrel3q1cvwn s2yu) b+fs+o and an objective with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnification o)ynwsuqfco3+b12s +vf 240?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constel8vg2ovj 3x1 uylation Orion has an angular separation 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 x82gy o3vv u1jresolve the two stars?

Correct Answer:    
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Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is designed to resolve obje6n) *q ap;.vr-jy*)hqao5r +s l hksgccts which are 0.010 mm apart. If the f *.5vnrrsqhy h +jak*)lcpsa;g6-o)qocal length of the objective is 4.0 cm and the wavelength of light used is 550 nm, what is the diameter of the objective?

Correct Answer:    
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Mark Problem
50#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The pupil of a person's)ee f,4mln )rb eye changes from a diameter of 3.5 mm to 1.5 mm as the illumi, rmb)4)nelfenation 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 Eagdfn8dr5:do5j. r i z/rth orbit by the space shuttle. What angular resolution could this telescope achieve if the wavelength is 50r/n o8 gj5z:5dfddr.i 0 nm?

Correct Answer:    
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