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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 e tdnpl*y()t b0g dkp(oesaf n +(298ujxposed in a camera is determined by ( dste0ky+( fo pjdg2l)b utn(9a8np*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 bysx:l0d1b4 sw)x hj xl4 the

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera t rp1)ueue px+mwwd ,ozu g,7gz 7-)c ke1s)7fqhe lens-film 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 iw 7 )g+7 f1uuzp,qdp7zk))e,cux w soemrge -1s obtained, this means that

Correct Answer:    
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Mark Problem
4#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that co9+8 n8cinnjdak6r*k9rvg n1x vers the film with a field of view that corresponds approximately to that of n8 rc6i v 9nar9k+d*n1n8gjknxormal 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 im /4rlt/ fyv7ofages 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 fieldvqzum.e qe1tqd/0- b5 of view than that of the eye and through which objects appear smaller is referrm bqeu.q-q5 te0z1vd /ed to as a

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the foll udor f2s-oy90owing ways is a camera different from the human eye?

Correct Answer:    
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Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of liyhqkx04 n 6f,gght by 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 which an eye can see objectsttn r3nwdn ,67k-l1ymgn ;r ,3rvo 2dx clearly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye can01y kh41 qqaghpwhw0 +w(o2hx 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 person is l uux3xbk9:wtovnw; n,k 4/.izikely to suffe,unvou x4;ktz w9 w/x3ikb.n:r from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be correct m5c kf3ue0vxtql 7f76ed 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-e0lkscg/py + et36r e back, this gives rise to a vision defect-sp yke ceel/ 30g6rt+ 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 wye9+2db ujk/from front to back, the person is likely to suffe+deybu9j2wk / r from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected gq0zwh j5qj /(w2:cykc0x7rbcnl *7 swith

Correct Answer:    
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Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short from front tet) z 9+oi;joro back, this gives rise to a vision defect that can bz+oir)9e t oj;e corrected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a mag5 9o podctd2p. hgb7t4nifying glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a verm fg7f)lzpv59 y large diameter objective in an astronomical temf7g9pv z 5l)flescope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image forme + -phzf zllqud:1n+v)u ye4p82lat0ed by a refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. What effect wil:n4l0lpvle1fz+yu hta-u+ ed28 )qpz l 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 visibl/pqvq2eadg8) s ca* 9;gk *gbre spectrum, in*/bka s a*prqg 2g8gdv9q; ce) which of the following cases would you be able to best distinguish 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 az-c kx ;lq1,uf magnification $m$. 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 tot . g2l yrx7-hlc3npbpci80n6 see the greatest detail whe x-cg0. 8tch3nl6iplbn2 py7rn using a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer frot 5 r5u/x:f/ frt: ozk07dervrm

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer 4yk / 7wt1avlifrom

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 tu 3 rv ad2-l9e1bc hl;o5rpff)o the ability to

Correct Answer:    
Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of a raj3 .9ciaszt5n9u 8rj drkzwwz8:b) 7kdar dish is doubled, what happens to its resolving power assuming that all other factors remain unchanged? Its resolvi)ri99sw8u7aw. d8ct5 nkb3rz j:zj kzng power

Correct Answer:    
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Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person has a far point of 18 cm.8 /x95c c.e cne4 bwszk;djr-c What lens (in diopters) will allow this persc ;.dercebz 8jn9-5/ckwxc s4 on 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 j:hr*a 7dpzjqx/:u j z8,jj:wbc44ftclearly objects more than 70.0 cm away. What power of lens should be prescribed if the glass is pxhdr*bw: j4atz8 j jqz,j:7:4cu/ jfto 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 lenses have power of -0nslp 84k i9ml,9zsv3gnv.d 4n .15 D. What is the person's far p lsvn,n34nzm 4vkl89. p9isd goint 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 uncorrec 4r- (d;g f:rdyr7h 2fbo*18nqbyavgoted near point is 4obr1;r 7gdayfgdrb nvh-f: o2 8 *(qy75 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 farsighted p z;ak:) e *rk qth-gih3l9/dofd*sbw7erson is 100 cm. She places reading glasses close to her eyes, and with them she can comfortably read a new gl 9:dt- /;iorekwh*h*qzba3s)d7kf spaper 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 he w mx-lec46c +ogears glassx-c cm+oel4g 6es of
+3.33 diopters. What is this person's near point?

Correct Answer:    
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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 bszap8zb2,7 ra near point of 25 cm. What is the magnification of the lens fo2zb sr7a 8,zpbr 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 cm9hkvwcg.:f s rgv7dt;l5muv; a//4 se. A person has a near point of 25 cm. What is th v k 7ecvs;d gt/hv f5/gwmu.;a:l4r9se magnification of the lens for that person when their 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 focal length of 7.0 cm. What ir mp saa*-o i0q -6me*ovua9g ;2xow/gjw* ;els the magnification if the image is viewed by a jo2i-*0meuxv mq/ a;a -o*gal;pgs*r9ew w6o relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converg)qb*+c 58dbqp:v fodhm/.pin ing lens of focal length 5.0 cm as a magnifying glass. What is the maximum possible mn5. mvqdqf b+pp di):o*b8c/ hagnification?

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 maac1u2 x0p *3ifn/+:jr tg rzevgnifying glass. What is the magnification*pvf nzae+3 c 2j g/iru01txr: 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 33 qjs4r1 ap cqnt+*wpcm, and 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum 3j*qqrn+p c s3tw1ap4magnification you could achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal lengths 2c;nb; *z0mbea.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were tomb*aze cn;0;b use any two of these lenses to build a telescope, what is the lens separation for the maximum magnification telescope?

Correct Answer:    
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Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telescope har.doys 0f nx wgf x+1n6x3s37us a focal length of 200 cm and its eyepiece has a focal length ox3xyur6 f3s+1wn0o x7gd snf. f
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 thcg .bbi8: 4jrelescope with a magnification of 10. If the telescope has a 8: bcrj4g .hibconverging lens 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 astronomical telescope with a magnificationa b/;o,-ypq/wxdwi+ q 6pby -g of 10. If the telescope has p-gb ,w iqb;y/qdy/o6x a-+wp 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 telescope is limited to a lengtjmz:8kzd-vzwh wb1 .; h of 20 cm, what is the approximate focal km8zh-wz; jv1 .b:dz wlength 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 eyepiece of foc9 ,g v(+mbipbffz4x s:al length 20 mm, adjusted for minimum eyestrain. A blood sa bpzbvx f4(+f,g:9sim mple 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 g+ea7il9qy m .focal length 20 mm, adjust.m qli ey9+7gaed 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 frs7qh09 c zwa4l(*nuand an eyepiece of focal length 6. r w0fn*uh4 q7(al9csz00 cm. If the two lenses are separated 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 has a 18-cm barrel and an objective with a2k-i xiil9pot5 d mgg7:47nni focal length of 8.0 mm. Whati xi4pni7:- 7o9ml d52nktgig is the focal length of the eyepiece to give a total magnification of 240?

Correct Answer:    
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Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constellha2w a cry,mn7w f(/,iation 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 resolve the rhy c,w/fa7in,2( wmatwo stars?

Correct Answer:    
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Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is desigevm0ox1 - n4b8a w9w vf6*fiorned to resolve objects which are 0.010 mm apart. If the focal length of thivx9w6 0 1omarnewb8-ovff 4 *e objective is 4.0 cm 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'f7w c5 c):vfmpc8lw b:s eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. B57:wfcvfbm:)l cp8 wcy 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 ha 9-f1nz)a gmmknxo3 f2s been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve if the wavelength i2 9omz3xa n 1gkmf-n)fs 500 nm?

Correct Answer:    
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