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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 exp2gt 2yyo/lez5;j5zx 82e wiiposed in a camera is determined by thel2ey8t 5xigzyz2ij;/5 w 2pe o

Correct Answer:    
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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 th4v4+u2 w 8 o7.i.zpui fp.mbtgt+el g1h *xyhte

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera the;( *cv2w-s xriuqyf;t 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 is 2rf(y xu s-tcwviq*;;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 with a field/ws6 9h ba:dy xb/;f a*g)qfdl of view that corresponds approximately to that of normal vision is h)wa9b:/*6 fdq dlbayx; fg/sreferred to as a

Correct Answer:    
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Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts likzes+*.locpcjw t. /j /e a telescope to magnify images is referred to as a

Correct Answer:    
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Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers lf0 cwq my /.o68o.dq15wuvuxthe film with a wider field of view than that of the eye and through wx .wou5/qy.c 0u 8qwl1f6dm vohich objects appear smaller 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 a dngv ;oz7.nsw80x3r i ,xvkm2camera 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 oc d 0+dbf m82p7zclnna78:yit ncurs at the

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eys(y7 himr4xv55u.bfe)acq2 ee 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 distancj2e.*n t7po;9 lhpyxhfcx w+7e 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 long fro9*svm99y ao46 v lexfsm front to back, the person is likely to suffer fr 9 o*alvseyx6m9fv49som

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corrected ujzmzk-db )5lc+k c*s .t;+ rrwith

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long from f gf :,r(poy7-imiu qw5ront to back, this gives rise to a vision defect that canir,pg7(-wu i fm5: yqo 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 to back, the person +jvrmlhkc0*46,s nxz is likely to suffer fromrh6 ,*v4sz+cxn0 ljkm

Correct Answer:    
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Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corr:ljf:cup n26uected 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, thi;d +em gq;ddw0s gives rise to a visiodq d;d;w egm0+n 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 glass? cta wj14)lol bh u,7soi7my8,

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 inefm/jg9 zd u1.t b0e 1;v.ybxb an astronomical bbm0t;byg9 1.dfu ve jx1/e.ztelescope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescop n6cf:qus6i 5bw yl;9b 6z0wrje. Suppose an opaque screen is placed in front of the lowerizlf:;bws qjyw96 0c 65nrb6u 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 vm h/se zr,+e7xisible spectrum, in which of the following cases would you be able to best distinguish between two zhx/sre7e+,m 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 magnizzjutl feghw+1e/j 7+rk-vz 6 z4v2 y8fication $m$. 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 would goug9tjnb1 b;19 +.ykljwf;j 4k3f dyyou expect to be able to see the greatest detail when using a microscope?kl9kj3ou4yj+ f; 1bg gyjtnf1 bw;d9.

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses sufferc kze+ vizoclw7f::;0 fg:-qzt86qb t from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer t6h yptg/k00s 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 ability+ ,y0ufm(k,41 s yvyygekb-tn 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, what hap9czds f4hvurd.z1, 4h;ukcx3 pens to its resolving power assumin,49 .;fu rz3chdu1sxkzdv c4hg that all 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 has a far point of 18 cvfpk9 98bb5 jdm. What lens (in diopters) will allow this person to see distant objects clear vp9kfbb8 d95jly?

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 lens 8ekg;e.n/fm psho g8;npmf.eke /uld be prescribed 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 i *))g phf9dlfdg6 ri*m/w0acwhose lenses have power of -0.15 D. What is the person's far point *f *f l)id0g dr/h p6i)c9amwgif 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 uncoru:tqia u.id 7:rected neauu :i .ta7:qidr point is 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 glas0d pahme any.s0:z azf6, snz 8zh2.1x18jbnlses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lens power ijp..zzaexy:s l saah2mz1d88, nz100f nnh b 6s required?

Correct Answer:    
Mark Problem
32#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A farsighted person can read a newspapersyd 1 efbva 3.rv8ly7; held 25 cm from his eyes, if he wears glasse s1r falb7d3v.vy;8ye s 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 ev2k2f69mckje 2bcy7h, 2 hhc person has a near point of 25 cm. What is2e2ym ,e672cch k9chhv kbjf2 the magnification 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 vs 8e;eh* h+pe10 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 their ne;+hee8h* evs par 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 i5psw a.yu6 a v2a.f(bms the magnification if the upvm.ys6. ba(f wa5 2aimage 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 lens of focal length 5.0 cm asecm iook8c(95cid6;i p(rqw - a magnifying glass. Wha-ricw;( i6 i(pcd 58 kq9coemot is the maximum possible 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 5k7 4sh2ht*wvc.llf1 w .0 cm as a magnifying glass. Wh. lh4cw2 wtv1lk*f7shat is the 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 lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cmv4rh4m n:vj,r , and 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum magjr :rn h,4m4vvnification 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 focal length l+4novd9(bddq + lc,ts 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to use any two o+9l(d +dn l,c4tbvqodf 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 leng4ei+ngs)kxl8z/i) f q3u f4ta th of 200 cm and its eyepiece has a focalk+ffx )iqti84l) zs4e an/gu3 length 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 0 *b(r+ekoye uwith a magnification of 10. If the telescope has a converging lens o0ry+e(*obk eu f 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 astronomxp)0 2 uih4o v+m dwa6g(*hczrical telescope with a magnification of 10. If the telescope has a converging lens of focagicraw h(2*v po6h 0z)+4uxmdl 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 livk:i amrx,qk0uj5 8rekw l r:)h*; l*vmited to a length of 20 cqu:,r;v hr:w * *5ekklkljma0iv8x) r m, what is the 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 length 1.4 mm and an ev - 2w.sd/xmvhyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sa.sdwx2 mv h-v/mple 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 eyepiecnd8i3kfus+g7w.xp; e+ t/:/g awapsoe of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is ta:+;wd +pf/8wgx igs/.a3 sk7eutonphe overall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscopsrica-1mjp rz5l0 mqzz;t j8)a+z 7h4e has an objective with a focal length 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 magnificati za4 si8z-c rz0j5 lhz71jm; t)qrmap+on?

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 a f: a33aj ;blr)yx1fik jocal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnificyafikj;rx1b ) laj :33ation 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 constellation Oriooxs9ify6l7* x h:n1s sn 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 7y1liss9x6 f*h:ns xothe two stars?

Correct Answer:    
Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is dfu t.m9y70du7ikzn1b esigned to resolve objects which are 0.010 mm apart. If the focal0mtuyu7z .nif9db 7k1 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:    
Mark Problem
50#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as the 7vp - -feuug-s 76qdevhgmf.) illumination is increased. By what factor does the minimum angle of ruf e fd)s g76e-h.-gpvqu- m7vesolution 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 Earth orbit by.a 6dvv*d+mwt the space shuttle. What angular resolution could this tmdtv.+w dv 6a*elescope achieve if the wavelength is 500 nm?

Correct Answer:    
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