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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 a4h; f ncava/a4/yzr ln6e-2hig2fh ;q camera is defh24 6y nz i/h qa4n2;le -afrvacg/;htermined 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 camef66t 5l7i oc tm/oa8gkra 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-v h c66-ay+bjq.fa*h lfilm distance may be varied by sliding the lens forward or backward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtained, this meacah h+66f-vyj l.q*abns 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 the film with a field of view that corresponds approxcdjxj7u ara zif.d,4 v6ed6 01imately to that of normal vision is referre. dad 6x,j614fri z 7juvc0aded to as a

Correct Answer:    
Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that actuh5pqt 9 pozv m/v794l uw+*-;tvu dlds like a telescope to magnify images 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 tp8fp 2cm+-mo vv gz9gyt4*6 ejhe film with a wider field of view than that of the eye and through which objects appear sma z4f2cv pevgp6gyt+m8j* -9o mller 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 humq n6md02e 0c0x,bv wigan eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light by the eye occursalf0zlwi4uhv4+ja 4- 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 clearly is 6qftp0zn5nt6:8 fvkzxdli46

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye can see objectsl a9 yjz(8z6ka 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 ton5:*o yl:e7n72vz; o2jmfwxlbot (dz back, the person is likely to su 5lmj*:vn:7z7(;2 txoelbo2zy fonwdffer from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corrected with6m- vc39usfr x

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 give; qs3xm bf;7ffk anv,,s rise to a vision ,,vqs nffx3m7fka ;;bdefect 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 short fro)ecn-ouk0.fsn yue.: m front to back, the person is likely to sn.u:-n ykso)f. eecu0 uffer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usuern)tfp 8 gr/+z n/b(bally 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 back, this g j2hupcg3/k d0ives rise to a vision defect that can be corre0h d /jk2pgu3ccted by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a mayba-bf4 : i+8ezrnwj0gnifying glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very obw07e *tae5z9co i)glarge diameter objective in an astronomical telescope9e7g*5 bzoi0aoec)wt is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. Suppose an opaque ji.iy;p4.qfa0tttcu2b 0 f4fe9ad8 o screen is placed in front of t.j9otiua4dp 8f4efbc0qi0.tt2a f ;yhe lower 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 visi: c9s026*wqnyb 0dwzcljxdz;cn; :j o ble spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lens referred to c zsj0*j:wl:yc9dq ;zd bxn02;6ncwois 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 magnificagbtt*d22oy +os 4v4 lvtion $m$. 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 ga o0bgc0cy3f i8 2ouzy0 /cck5ja;p0greatest detail when using a micrf 85ba;cg0yz 0juococ0 c2g3iy/p0ak oscope?

Correct Answer:    
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Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suf0amf g :yiud++fer from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer f951tc( jg cz;(bqlek:x1lgs 0cxo; wlrom

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 refers to the abilijxy:(4bb62wgg : zpxqr86edity 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 .2q7xe4):2 u sjsscnqhk1qxvsfji(;csix.1 its resolving power assuming that s(q.hk jjc;s) vni ex qf sqi17cs2 x4:s1xu2.all other factors remain unchanged? Its resolving power

Correct Answer:    
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Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person h5 ,laejd75hag i bp/4ras a far point of 18 cm. What lens (in diopters) will allow this person to see 5 ae 75p/a gb,4hdrlijdistant 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 cm away. What power of lenwge a0py /b6nrf/uy -9s should be prescribed if the glan/9-f6by ry we/agu0pss 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 whose le8z dygxem5 25jnses have power of -0.15 D. What is the person's far point if the glasses are vergxdy25m z85jey close to the eyes?

Correct Answer:    
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Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed to correct for farsightedness m d,5d h(jf atga.fa66where the uncorrected near pom6a5 athdfg( af6., djint is 75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted pe+t73)tn.w tqyd htec0rson is 100 cm. She places reading glasses close to her eyes, and with them she can comfortably read a d y3)tw q+h0 en7.ttctnewspaper 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 held 25 cm from his eyes, if heeguz8y 05+rra wears glas+zr08 geu5 ryases 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. b-o,p 6jx r yfns8s+k/9gdn*ml5jtu has a near point of 25 cm. What is the magnification of the lens for that person whenk+,g9om x5.r/8jn-sntpyb*6l fu sdj 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 lengthn9crh n * ; qh3nqz8xu:ycda20-i4k-yiqah.g of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person when their eyes are focused at theirk3zh-0qn8 2q.-xnhc9 uniaacr:qdg 4hy;yi* 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 p4j8hyts* u3d is the magnification if the image is vs*3ypt 8h4d juiewed by a relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging -vqm+ (o3slq alens of focal length 5.0 cm as a magnifying glass. What is the maximum possible (3slvo qa mq+-magnification?

Correct Answer:    
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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 glastgq n/;/comv0 g5gts3.cfr vj9 fv8+gs. What is the magnificatigggn8o//cc jm9f. 5 ftv0 tv3+;v gqsron 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 ofgotb:t0z:l a6i sup.; focal lengths 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 magn:l:p; 0tz6its . aguobification you could achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focfl7fer2 7f( 5;/h j,uionutoaal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. I7fle(,u otua; ofr/n7jf52i hf you 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 cyepw2g6 kt/q.dgg6 u5m and its eyepiece has a focal lengtqyt .k 26/w5g6 uedggph 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 telesc(yd3 1k-mqiv cope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the focal length of the eyek m-vcq13y(idpiece?

Correct Answer:    
Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope with a magnificatiojd hpz1-e 2;m+k-a rontbqjbi+)w 2f:n of 10. If the telescope has a converging lensjt-h jbw+pnr22qm+izb:)kef; d- a1o 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 telescope is limited to a lengthz0wzp)b,.m )ep oxe5m of 20 cm, what is the approximate f) exbmpz)z. e5,o0mwpocal 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 eyepiecg0f4s 1bz ri3hfbv2e6e of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm 60rs 4hbf3eivb zfg21 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 obje2 u6n)mopx -o1mswvsr( mi4h1ctive lens of 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. What is the overall man(omp u sr1hwvimmx) 2so 64-1gnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an objective with a focal lengt;a8aa/. d7f8etky dw o-* ; brl,niezyh of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lense-w;zload tf.ieeybn y8 a,r ad87k*;/ s are separated by 40.0 cm, what is the total magnification?

Correct Answer:    
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Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm barrel and an objective with a focal lengtu2zxwsp )j c74ttd1t 6h of 8.0 mm. What is the focal length of the eyepiece to give a total magnificatij4 dp)1 wtt6tc2zx7suon 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 o.f v .rm 7lh )q6we9t-s.ovk mo4y*tqseparation 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 resolve the t. ty4-rqv69tol7ewhmfvko*) .mos . qwo stars?

Correct Answer:    
Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is dzui5; u o-zpn+esigned to resolve objects which are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wa-;i5nu+uz p zovelength 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 2g5w lfn,r he6bq a10gchanges from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does thh g 2fgenaq5b0l6,1r we 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 / k hzd/f8er)o296tco.xce hj Space Telescope has been placed into Earth orbit by the space shuttle. What angul/rzdece9 .f)6/8 jtohx c2h okar resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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