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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 i2 -lpcxma*b*gfk4b*f s exposed in a camera is dep lc*-bfmfxga4 2*kb*termined 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 by th zoz3 z+: 1cvqod,r.qre

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens refle8+pwh0dldvkc*g8z / ux camera the lens-film distance may be varied by sliding thhz* d+clk80uw/8vgpde lens forward or backward with respect to the camera housing. If, with 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 th hy2o.ye (*ib*k:uedn e film with a field of view that corresponds approximately to that of normae 2 o:khneu*ib(y* d.yl 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 images is referq7h7ls ( -lc- u0ynwssred 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 widevka(qb((p khpn4p-dm-,txr byx: 7 9 pr field of view than that of the eye and through which objects appear smallera phkym--((bqrp(pxn79x p vt,4db : k is referred 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 ah ow7h-3u yuwdg0u; 5i 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 m:7y qyn;w626ci fxsdoccurs at the

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance y18,evboi ab46 i/p9)*gjvheeyg7w;z wt4fn at which an eye can see objects clearly is

Correct Answer:    
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Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance atgzks gi. t8z,a j6a,r6 which an eye 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 4d afjur1oi6:ts1y(wkm( 2*zl7.mxnj6d sw l, the person is likely to suffer fr2l*xy fr(dlwu.:t61smj j7k ao zwsidm6 4(1nom

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usuallyy -/ 8:chmespxp4gj 7f3r8 brv+*iy le be corrected 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 back, this gives rise to 4228 oxw;eogc u4kivja vision defect tha4oxwo 2j 2c;4kigv8u et 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 from frontgpr ai8 (8exb;g3 rs;+ rfvi9b to back, the person is likely to suffer fro ir 9i(e b8g8pr;+asg3vf ;rxbm

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected w0icfu946f vu nith

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short fzp(+kwoc1w q; w*e inx9n. x)trom front to back, this gives rise to a vision defect that can be co*kwex ;wnp .1+in9 xw( )ztqcorrected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnif6z ytdadrs,;kqpx +u79c/d 4pying 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 astrxb- x/ .obkfb7kwe4+ s/fk 7vhonomicalk +7xhkv4e.ffw bsb//7b xk-o telescope 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 ani88tr.ob f6mxcrq) ,w opaque screen is placed in front of the lower half of the objective lens. What effect will thxm)68i8btcro rq. w ,fis have?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film useda ula9m rp8r*)moa j4qca -/o9 has uniform sensitivity throughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lma l4-/ 9orqumcp*9jaar) 8oaens 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 9o 60oosq4(gw ei8nav xj wu-t5r:4so$m$. 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 swb3n baxo2.m; ac t5wnbub8:aa 7de (+ee the greatest detail when using a microsc7:btnbe b;uond3mxc2ab( w+.a8 aw a5ope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer js(b9z/rjyi 1sa.24jjn otk d5c 7w67wu8zje from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffei21,d7t/ wf l e.px,ak yz3tbar from

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 q. vn(daq4:d hrefers 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 doubllpnya 2s1 ug*)ed, what happens to its resolving power assuming that all other factors remain up12a)u lsnyg* nchanged? 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 lensenk3zb05h5 zb (in diopters) will allow this person to see diszb0zh3nb 5ke5tant 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 fn/qual9k7 5kaj 1a os exv+;3oo .u)vwp ,jh7power of lens should be prescribed if the glass is to be worn 1.00ka77joku x a5hev;fv )+u,jq1pa3.w/son 9lo 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*y: u ew.d,njk0u qym8 -0.15 D. What is the person'w *j8,mqydk0u.y ne:us 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 farsi4-zeqt5jns lw 905f- rf -lrboghtedness where the uncorrected near point is 75 cm?j bql--lnfft 09se zr5 row4-5

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 reading glassesf3rgtc ;;4h8xe5sgstf e 6 d*b close to her eyes, and with them sh xe*8c6;dsgst3 ;5 tbfrhfe4ge 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 heldoe;8 kwkf s/:zxuw19b 25 cm from his eyes, if he wears glae1s: u8kfox9b/z w;wksses 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 le3y0au )np xe/oio5u1z ngth of 10 cm. A person has a near point of 25 cm. What is the mag0o3/y o )xu1aui ne5zpnification of the lens 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 6 t96w.mkhxsf :.rqwtk;( nqbrp /c+ o10 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 theib6.po qh6;t .nkwm+ t( /cf9rksr: qwxr near point?

Correct Answer:    
Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass ha f5 pchoxng, pj kpcq3nsvb2.7 b+16o6s a focal length of 7.0 cm. What is the magnification if the image is viewed by a relaxed eye?o6q hjc5c26 .pvg17n+fp sp ,3o nbbxk

Correct Answer:    
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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 magnifying9 i6xnd,/lyr h glass. What is the maximum ponhy/,idrx6l9 ssible magnification?

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 magnifyii3a:6j6pmmw lbicq n (n +e:9vng glass. What is the magnification if the person's eye nmn iqjpw6cb+e9:va6i :l 3m(is relaxed?

Correct Answer:    
Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of zlgvhn) xl kn/cq+(3*yl/ 8nhfocal 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 magnification you could achl/n v )z(l yhqx83n/l*gknch+ieve?

Correct Answer:    
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, 8.0 cm, and w4ck4; j+)dvubr( dipoefvf97unv 26 16 cm. If you wu9n7ko f)wbf vc;pe( 42+6jv4i rud vdere 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 len u0jdx )*wl3r65/f-2vmsvsm yn *qjgvgth of 200 cm and its eyepiece has a focal lengthv-nf v2s mrsmvu 3gl dy*5 )*wxjj06q/ 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 magnificati2)/b .uzoddnl xhyb.: on of 10. If the telescope has a converging lens of focal length 50 cm, what is the focal length of the eyepiece/h od b d:bl2)..xuyzn?

Correct Answer:    
Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope with a magnification dpz/7e ;9hk jhof 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting length of the teles;7pejz 9/h hdkcope?

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 lfxm 8sq4qo 6h3+fqnq1imited to a length oh 8+qno fs4qmq3 61qfxf 20 cm, what is the approximate focal length of the objective?

Correct Answer:    
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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 mv,kid zq+01ffocal length 20 mm, adju1+fdqikmz 0v,sted for minimum 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 ler/cyu . vu:9wrns of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is pl:9v r wu.ry/cuaced 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 s75ezg5i fian.4wfj4a focal length of 3.00 mm and an eyepiece of focal lengt snzj7wi.45fe5 gia f4h 6.00 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 barrn*l+4g n2t 4unmsa md,el and an objective with a focal length of 8.0 mm42g ,muam4nt ls+n*nd. What is the focal length of the eyepiece 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 constellatioqeu :elc(;gi;n 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 apeeqil ;u(:gc e;rture (diameter) telescope that can just resolve 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:;hy6twzecc x9l y;/v resolve objects which are 0.010 mm apart. If the focal length 6;:e;t c/lvy wzyh9 cxof the 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's eye changes from a diam66 fv sr(qao6e e2b7uqeter of 3.5 mm to 1.5 mm as the illur6 6o e2u(e6afqb7q svmination is increased. 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 has been placed into eq-za9s tbv2*h26e qvEarth orbit by the space shuttle. What angular resolutzhe96 vsevaq-t 2b*2q ion could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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