https://webassign.org

 Forgot password?
 Register Now

 

      

Upload Images

Unused Images

Tips: allowed image types are: gif, jpg, jpeg, png, webp; When uploading is finished, thumbnails will be generated and shown above. You can either double click on the thumbnail or simply drag the thumbnail with your mouse, the image will be bound to the current problem and displayed below it.

Used Images in Current Log

Tips: What is shown in this column are all the images associated with this exam log. Those bound to a particular problem will also be displayed immediately underneath it; Deleting any images will make them to be transfered to the "Unused images" category.


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 tt6)v0wq:g2 f au5fq3 mg0hhrhhe film is exposed in a camera is de5ruh6hm hqwag2:v0 3 0fqtg) ftermined by the

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the film q+b 8k2o . +u(9roupboqua/(i vyqap9 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 camrf8kh 0zk .dg+era the 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 obtained, thhkd gr+f 0.k8zis 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 of view that corresponds c;) ft)b:xkgvg2 j 6lmapproximately to that of nor; m)) cjbgf:kxl2vtg 6mal 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 imaj;e4 p/l6e1o hfrnt+1c i 1ronges 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 thzb1irm d57 c,cg8ly2 xe film with a wider field of view than that of the eye and through which objects appear c 7d1 g,zc8x5 y2lmibrsmaller 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 camera diff- tcbvif7fkvox8 60w lh1e- c0(lwe2oerent from the human eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction 3t0lb g93xtw cwh9yf1.x9h v fof light by the eye occurs at the

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at whi* s;u w6qmdvp+vp;te :au5wg)ch an eye can see objects clearly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye can see obje)gr/qk8o k d+xcts clearly is

Correct Answer:    
Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too loae0yd x2,)dwq bf,huvn vz-3q0n8u8t ng from front to back, the person is likely to suffer fromnqv8,a efu dt)0n-0zv8 hwu3 qb,xdy 2

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usualmc4k6 64aidpdly 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 fro g4p 7cd nq,)/ozki:irnt to back, this gives rise to a vision defect that can be correctgqcipnz7 dk4i/)o r:, ed by using

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
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball c-wuoj z*qqv3 x3 m,y3is too short from front to back, the person is likely to suffez-v3qmu3,owyjq3 x*c r from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected wi3j(qieia sk+5 ;)fxjjktci rk+2+ s o2th

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
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short from front ;s(oa)c8y uob h-4eac/ 1yik:zu0e ofto back, this gives rise to a vision defect that can be corrected(e)so i;:/k4c cz1fey0h bouuo-a8 ay by using

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
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is ig,0wb/p q0-n *ma/ofxz(j xu a magnifying 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 k+ yirs, ..ckfl2t*ooan astronomical tel. k2f*olk,c.isr+yt oescope 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 screbxlsl *: b4m,ao bee5(ra)1re mt 5z8aen is placs,4:* xl( e l5o bam rab81ztambe)5ered in front of the lower half of the objective lens. What effect will this have?

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
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitivity thra3y,ayo-qm j5nz)a9+jgs c .voughout the visible spectrum, in which of the following cases would yousj3a 5)9j g+ an.,-zqvmyya oc 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 hp aul:n vg;: 8esmzq7*as 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 greatest detail b 1z, 7k9lui)1movdttwhen using a microscopeut,7z1ktvl ibdmo)91 ?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses sufferrxcs bux9ar /bl68d* :qc-ki k9/:bkd from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer frop0)a-q( gr(r6 pyzpki m

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to:ei 90z;n+wb4tj wtj, nu eap* 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 doubled, what happens to its resbg*m :ct o06cwolving power assuming that all other factor*w: b og0cm6cts 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 cm. What lens (in diopters) wil nd10,n/h*n 7h tecofkl allow this person to see distant *co0 nf,7/h1dkn ethn 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. Wh1 9l7/1 sydzcdde4 hjpat power of lens spc1s41jd ey/dh 7 z9dlhould 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 whose lenses have power of -0.15 D. What is zu0yv am2xz)klmhs:n juaf// 4;8/nmthe person's far point iff uj:uav mm 0y lhzsank//4m/x2zn)8; the glasses 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 uap8r //.e.gj jp-8uec6r t tmfncorrected near point isjut/ j r t6erge- .p/m8a8.pfc 75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted perj nfguu+ 5-mh:gbc xc,zt468hson is 100 cm. She places reading glasses close to her eyes, and with them jhh,u 8fbc-x4g6 +ct5uz:n mgshe 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 253qlrx9u1at3xfn5/x2t du2 cja 0: x gj cm from his eyes, if he wears glassn:lxdxa9 xttj f 1 ugq0cu5/j 322axr3es 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 person has a near point ofi,:+nwfoysj3/ wp n 0ky6lsd 5 25 cm. What is the magnificatpkf ny0yn+5loijws3d/ ,:sw 6ion 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 near poin9 m48,);bwlhadkwu x rt of 25 cm. What89w;aub h, dmw kxr)4l is the magnification of the lens for that person when their eyes are focused at their near point?

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
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass has a focal length of 7.0 cm. What is th;c o+7(zsbsgx e magnification if the imsb(s7gxzc+o ;age 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 converginjwml 0f7q)l :gg lens of focal length 5.0 cm as a magnifying glass. What is the maximum possibgml7 qjl0 w)f:le magnification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a conveonb+ / evk/g/io.no5 xrging lens of focal length 5.0 cm as a magnifying glass. What is the mo/x+/von/o. nk ig 5beagnification 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 li(b+t4a jnq8(dskrt3f (c;r lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If yo3d4lsqc tk((a jr 8+fr n;ti(bu were to use any two of these lenses to build a telescope, what is the maximum magnification 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 2.0 cm, 4.0 cm, 8.0 cm, and 5b5-ez/ucll iblm f7.pp2(;qeo7c hio4(nxd 16 cm. If you were to use any two of these lenses to build a telesc4 b-mzelpiep/;lul(d 7bn q 2.o7h55xio f c(cope, 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 length of 200 cm a/wem ,qkjn*g .nd its eyepiece has a focal length,mjk* eg.qw n/ 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 telescopf/ 7aid8c8vvm e with a magnification of 10. If the telescope has a converging lens of fv 8a difvc/m78ocal 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 telescop. vkgi msdcp;c+dcth c,+5-4q e with a magnification of 10. If the telescope has a converging lens5v 4 h;c.t+g +cidmqdpcsk -,c 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. p2-k0ka/ukxuj1e94f uesa -gIf the telescope is limited to a length of 20 cm, what is the approa4u /e0e as-guku29 1jfpxk- kximate 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 eyep o/m/qx73qin l a((zxnkeoo 1*x(:tdpiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objeo no(n/a*oipzxed:xm tk xql((q7 13 /ctive. 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 objectso),hpwz:ckuy .2 zsvj7 a/q8cc64 scive lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective.8/c)y42sc:qvz7zh uo.c6 j,a cp s ksw 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 and goaf ;9i jrk(fwy(1 r3an eyepiece of focal length 6f wjik 3a(rf1yr;(o g9.00 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 barrel and an ob u/x t-1thrib*jective with a focal length of 8.0 mm. What is the focal length of the eyepieht-i/rb u*t 1xce 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 Or rokbok*(vf7(,5o r frion has an angular separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is t7, o* r(5fr fovrbkok(he 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 designed to resolve objects which arenx/qah7 n cl:56nisd a4v) t*q 0.010 mm apart. If the focal length of the objective is 4.0xhta4/ lis)qnd c 6q5:*nnav7 cm and the wavelength of light used is 550 nm, what is the diameter of the objective?

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
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 1.8gidpj5)e,d hy d t7*a5 mm as the illumination is in75jdeghya, tp*i d d)8creased. By what factor does the minimum angle of resolution change?

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
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting Hubble Space Telescope has been plafi1.n9a c a3zfced into Earth orbit by z1fca9n .f i3athe space shuttle. What angular resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
  • :
    •
    Total:51 mks Pass:30.6 mks Duration:Unlimited
    未答题: 已答题:0 答错题:
    当前第 题，此次Practice共有 51 道题

    试卷内容到此结束!   © 2024 https://webassign.org版权所有

    Archiver|Mobile Version|Jailroom|https://webassign.org

    2025-1-12 01:00 GMT+8 , Processed in 0.147108 second(s), 114 queries , Redis On.