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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 ch1; qvz6 lrgfs(ozr 50)0lupcamera is deqvfzs 5; )( lu0lrhprg16c 0zotermined by the

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light rea m;(lil l:83ej/2mlgtw2u9 vv(avackxr xs96 ching the film in a camera is determined by the

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex cd qna73(vesdubo;:3 2hp)mhw amera the lens-film distance may be varied by sliding the lens for;oheqad 2 : )b3pmnh7uv(s3d wward 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 f+0vm kp 3.5 3nhjuansca 04heuilm with a field of view that corresponds approximately to that of normal vision is re pmav4 k3n3+0ac0hn hue5j.suferred 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 ref/0 y3toyu.90bdin wjcjje3w 6 erred 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 widervo: upxud,0) uxtrq iacd.;01 field of view than that of the eye and through which objects u1v,d;t :i c 0.rouu0xqap)xdappear smaller 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 7mo3f6sui2+x xcmy(uways is a 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 byr wey(yrx78,a1 xk1 0u.oyt zct8ir2g the eye occurs 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 ci0 kzi;r.o dr5learly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eyk(3s2 oc. azhre 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, thxm;8140l qk e5 rrhqlme person is likely to sufm8mqek41lhxr0 lq; 5r fer from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corrected witfmz o f+z/2/ju4el8qf ytx;z 3h

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long from fron d/b1dsxu3*ykj :*pn,2mlg bqt to back, this gives rise to a vision defect that can be corrected by usg2dmy*pqk 1x*dnsj:u/3l bb, ing

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 pers5bmu1yzqoj,q lfo 4cf6ixtw: / o+1 i1on is likely to sjmct1u1y,iff z ooqbi+ l :6 w1x5q/4ouffer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can uso,abzd 66q(h +*rrv6,0 ;dvuxxr jecyually be corrected with

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is 2p0nj )w/5 z:ywyuhxhtoo short from front to back, this gives rise to a vision defect that/ nw2 pjwuh):5x 0yhyz 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 magnifyint3m9hu rkqh my7(j--gg 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 afj2 mlu 1ko(+zstronomical telesc+21j ufm (kzloope is

Correct Answer:    
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Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image form2 yy;q+ m uo,101l (jwtedhgdaed by a refracting telescope. Suppose an opaque screen is placed in front of the lowerwm2yju1e1ha;tdq ,yg ( o+0dl 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 ye 1tt;qd jnm 2tl yu+ul0 (ik59yn.w6uniform sensitivity throughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lens referred to is the objectiqn(i j 0md5y k2l;9w1yt yl t6ut+.uenve lens of the telescope used.)

Correct Answer:    
Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A refracting telescope hiu/dw7t 4l5skas 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 to see the 1zbpq, j*h3hcgjn pz-ar0 +*kgreatest detail when u p* g13jrbk 0cz zahn+hj*q,-psing a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer f.s0hf-mo gcp+n8o;wj6p 0 ph wrom

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer*1ard ub2go bg, /ix5f*psr;y 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 abj80 ;d-78nhn6wkp1d/xk 3feqbtavscility 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 happens to its resolving poweg +-wu 3v 3xzjzho g)av:bxy55r assuming that all other factors remain unchanged? Its resoz3gv +-ag:xuj vbo53 )hwzyx5 lving power

Correct Answer:    
Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person hy450wmwosy1 c v3a(h )mwlv a)as a far point of 18 cm. What lens (in diopters) will allow this person to see distwvwy145)shwy( o ma v0amlc)3ant 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 p vg j hq:x/f*4jsx70usower of lens should be prescribed if the glass is to be worn 1.00sv jfx:0h*7/gqxsju4 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 glasse l6f1ht*.tk4uw)cnt y0pk o/ ms whose lenses have power of -0.15 D. What is the person's far point if the gl .yf 1k6u)4* hck/t0 otlpwnmtasses are very close to the eyes?

Correct Answer:    
本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed to correct for farsightedness where the uncorrectc .+jjtv4k iirmp,q-wuof5;:+-qw ie ed near point is 75 cm?u ;p. 4w: +comki-+if-iqwt ,jrv5ejq

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 glasses clo hgyc9q4mculq,w0.- 8 io,ptnse to her eyes, and with them she can comfortaiu nopch -,y80. 4gqtl9c qwm,bly 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 readkrs x p:1ncip969 oz;b a newspaper held 25 cm from his eyes, if he wears glao9xs1 9; bi:rpczk p6nsses 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 foca. ilted44lu*:vw:u 6zyz skd0dh:c 1 ql length of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that persod.: zc*6ds4v:z 0i wh:q1yltdu kle4un 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 leng1rr/u f cglx3x50qd)dth of 10 cm. A person has a near point of 25 cm. What is the magnification of t)/xrrddl015 qx c3g ufhe lens for that person 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 je3/mh.h ln)q 7.0 cm. What is the magnification if the imjhml qe)/. hn3age 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 lel.7ivtw5 h1pyaq: ; )iwgtc;tngth 5.0 cm as a magnifying glass. What is the maximum povc;qiy hlt1p gw)a;iw5 t:t.7ssible 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 magnifying glass.i mj-z9)h du+zfepef 3qao0+9 What is the magnifz d-3 oa+p h0z+j i)uq99effmeication 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, 4z3r wzq6i(s0 x.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 magnifications3z6 w0(rqx zi you could achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses * k2z nzcpj2vt-b y:0fym(b6 yof focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to um tz2 *-kfc v:0n(yy2bzbyj6p se 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 em oe fg2/un79a focal length of 200 cm and its eyepiece has a f 7f ug/nee2mo9ocal 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 with a magnification of 10.r,vx 1a +j vmde(*cr80t+phyl If the telescope has a converging lens of focal length 50 cm, what is the focal length ofl a(rh0,dm+pc*8 1yr tve+jv x the eyepiece?

Correct Answer:    
Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs x1b(aivjz 3ej(b a:- can astronomical telescope with a magnification of 10. If the telescb(ja( bj1e3 azicv:-xope has 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 108kq70(:,m pnx vnqsg7vir b0r X telescope. If the telescope is limited to a length of 20 cm, what is the approximate focal leng7k ,8qx0 7br vmgvis q:(0pnnrth 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 zz +q4o :z e/km(xldk.length 1.4 mm and an eyepiece of focal length 20 mm, adjo+m./ 4kqk zed(zlz:xusted for minimum eyestrain. A blood sample 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 lentft; rn( ee/y-s of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.ne;/ytf- (et r5 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 w:avrh:pxc5x2z -t h/ qe0jar6ith 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 jqtca-ve::0/5xr6hp r2 zx ahthe total magnification?

Correct Answer:    
Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm bazd54w: 0k tcph4jryp 7 e2cp0.woom9v rrel and an objective with a focal length of 8.0 mm. What is the focal length of the eyepid wpzo.j rpm ovepy0 7wct:20hk544c9ece 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 constel9anfo4f 1s85nin1 hnvlation Orion has an angular separation of 10-5 rad. If the wavelength of the light from the syss8n9i1onn1f5 a v nf4htem is 500 nm, what is the smallest aperture (diameter) telescope that can just resolve the two stars?

Correct Answer:    
Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is des1 .8vbp9abtod igned 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 is the diameter of the d18v9ba . botpobjective?

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 tc;) ) ibvvsopam 0hdw21/ f9wbo 1.5 mm as the illumination is increased. By what factor doesw9/2wmb1idva pc)s;ob hv )0f 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 Spcfo)isbhvkgx w*/.*+ z kh:*xace Telescope has been placed into Earth orbit by the spacbs/)+xh fk*:*kgvi zow.c* hx e shuttle. What angular resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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