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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 camer s zjyuiz(ob5162tfz+ a is determi(y5z +6ztz os2fibu1jned 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 cam rxo)e.9)pqt z+jip (3r ig9baera 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 va1wltb rq 6ob)vukg:v j 6qp)-mv5 x*-iried by sliding tr6k -i1q:b owu5v- v))6*tjlg mpxbqvhe 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 the film,pr wor(rk4- oax7 fb9 with a field of view that corresponds approximately to that of normal v9 , ar4(wkfpbr-r xoo7ision 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 n;v/8nuhs,1gj e4gw 8pt3t hs 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 the film with a wider field of view iy vv5 b5;n0mrthan that of the eye and through which objects appear smaller is referr;vr v5 50bynmied 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 k4ttt k1x8/v qup*:o pthe 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 occ1odbc 7 t v fpnrcb)s)vy,0+y(urs 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 z/a l+-rh6b i*i/*d5eeasodu eye can see objects clearly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distancu)cc p o)+8uzae at 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 longr4 rm -iv85b-c 8elzpr from front to back, the person is likely to sufli-rpzmr4v85 ecr 8-b fer from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be co6m /wy 7fqn vc/s-qd6errected 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 ris,j *0.,d-;f6h i3hdjnep nmbt( q yk ctyg;ay8e to a vision dg0dyknd,-*8f; m3c (;eyyaqj b ,hp. nth6tjiefect 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 from front tl-m)df w 3ckpkih0::7feu:hno back, the person is likely to suffed :nef07uimchw)h 3:kp -fk:lr from

Correct Answer:    
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Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected wit . +r)c; jolx9gigi3hbh

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 rise to a visipm+tsq5wtug2 z o .w)0onmg+.t5ptsw q )z20uwo 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 magnifying glassd; b3oa fmx:f0?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very ln5 u( 2/ 5f3ecqmatgjzarge diameter objective in an astronomical telescoa3ej5c2 gqt( zunm/5fpe 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 scre9arj addvsx(l7y+ lg-+xa 1s (en is placed in lxj+ardav7 9+ s1dgs(a -y(x lfront of the 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 haylwht( )2y sl*s uniform sensitivity throughout the visible spectrum, in which y)hl2ws(lt*y 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 han uko s(j-d lfmwi+b4+rh7zu 5*hb7h(s a 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 t llm*l. zio67qo see the greatest detail when using a micrlz oqml i6.*7loscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer o:c ;lpwpnyydan97:+ from

Correct Answer:    
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Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors su*pbfy6* hc*jdj*sij s;7)y x9s k(jbbffer from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to the abili w7wxpjnr-)5mh vf(n .ty 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 ;qil wpz-*0z(s ix)c)mt;wy o, what happens to its resolving power assuming that awipq yws tci(z-lm0)o z;)x ;*ll other factors remain unchanged? Its resolving power

Correct Answer:    
Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person ha vl:zf9hp5 idbf(i+wj2m +k,us a far point of 18 cm. What lens (in diopters) will allow this person to see distant objectw,kz+b9iml5f: 2h ujvi(d +pfs 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 ob9qhq8 ad;i t:gjects more than 70.0 cm away. What power of lens should be pghq;d:ti q89 arescribed if the glass 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 whosy(pkmdib. n5 -e lenses have power of -0.15 D. What is the person's far point if t p5.ikym-(n bdhe 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 umd8dm* l 3u;j.kr :opsncorrected near point id:* ;sr l.mju3mop dk8s 75 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 person is 100 cm. She places reading glasses ce t n1tusb*.si--7zw llose to her eyes, an-ze w-binss 7tu.1l t*d 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 held 27vulphon, jo.+js( *b5 cm from his eyes, if he wears glassesv*( nsjuo 7o,pjl+ hb. 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 persowznio0p d/z; iln399un has a near point of 25 cm. What is the magnificatiod9/pzi3zun n0l9owi; n 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 10 cm. A person has a nnvg0j(yj :hr8 bit1w,hyx c ,3ear point of 25 cm. What is the magnification of the lens for that personcy r80t,nghx(iyv,w jbh31j: 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 magnificatitw 2/wgbv+b5+u 8eoo kon if the image is vie2o8vku ew/wbo+ g bt5+wed by a relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lu8ay 0u( s,pnxens of focal length 5.0 cm as a magnifying glass. What is the maximum possible (8apn,s0 uu yxmagnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens fjnwm -4z ppc-gp/(c 4b,jbmje+yh7- of focal length 5.0 cm as a magnifying glass. What is the magnification if the person7m(-g p-nj bpjp-cz j4b m /ey+wf,h4c'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 2x3wt ex47m rc-m(0cce.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 yc7 m 0c4 x(-ermt3excwou could achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lense;s3n4/w *gk9 8rjlboj z0scwcs of 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 le4;rc 8 9g/j j*nwzc sos3bkw0lns 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 has a focal length of 200 cm and its eyepiece( kegjugq7xo3d*bx p0uty*g(h 9-bt + has a focal lgdhbj k+bu *3oxt9 ygx( eug0q*t-(7 pength 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 telem-vt+ )arvb c6scope with a magnification of 10. If the telescope has a converging leavbr6)m cvt-+ ns of focal length 50 cm, what is the focal length of the eyepiece?

Correct Answer:    
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Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope with a magnification djbp ;/t;z.)wtoj 8r../bq8revuafz of 10. If the telescope has a converging lens of focal length 50 cm z8v/dor;a. ;pb.q/f8urwbz )ejtjt. , 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 telesc-i,u,eim q ig-ope is limited to a length of 20 cm, what is the approximate focal lengtu-m,e- iiq ,igh 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 fochw8j6vh2o bj 6al length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 8jhw6hvjbo261.5 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 w0 +/wvod+pa/iv vrz1and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from w v/ri0oz1vp/a dwv ++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 cc.kqx,6akm 8v e;r/h3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, what is therkvk ;x /6e,hm8 .qcac 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;foay mo40br;sg*l (f an objective with a focal length of 8.0 moa;ob4*r 0ygl ;(fsf mm. 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 constellation Orion has an angular sepapmrb v8n:k/ jbl a 9z1l89orm1ration 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 re8 l 9/b:1m9 r1npbazk8moj rlvsolve the two stars?

Correct Answer:    
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Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscop d3bt5*fsd ;e/d cqom)e is designed to resolve 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 550 nm, what ifd3ddeos/c t *)b;mq5 s 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 eet9z awl0-y h4kq5 (yoye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By whkq4yel5t z( hy0a- 9owat 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 Telescopejw.af:df,dh4 has been placed into Earth orbit by the space shuttle. What angular resolution coufdaj 4,: wdfh.ld this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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