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 an/8lrs) zk:b ngd the film is exposed in a camera is determined by th8snz r)g /kl:be

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
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the film in a camera is determinedl .k6*c y 0mf1g8gz7 xz5jxcke by the

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex came ob+ o:c4rg)gcra the lens-film distance may be varied by sliding the lens forward or backward with g:oc +rgcb 4)orespect 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 with a s8.) jqf r93 w glb4) ww;brb5*hhokzwfield of view that corresponds approximabf .s8 9r g;lhj )3zqhw owwkwb4)*5rbtely to that of normal 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 ma f)oz m+;89ncei z*wsx,sczh7bbun4-gnify 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 than - i.r7+kchuq qthat of the eye and through which ob+qk.qr-ci u7hjects 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 folli9m-yg y2 *cqm5crqx*o(y9 g lowing ways 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 by the eye occurs at ygl,rynq1l6k/6r :pz)y*za e;6 guk fthe

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye cay,/gp gwdbdcm 3b(i/ u0th15kn 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 objects cld:( rehf7bv jf8 je3sq, 4k5gnearly is

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
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too long from :bk5 09k+ txeo nu ynmlc29d5/mw5nks front to back, the person is likely to suff2s9w0dxk:ntkkn ebm55yo5+ /clunm 9er from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usu.sd9mx y / qju/ajo)9fally be corrected with

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
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long from front to back, this gives r 1+vdivueahj0 a1o/ 6sise to a vision defect that can be correct0a eu i+/oa1vvhjds1 6ed by using

Correct Answer:    
Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is too shpevdc)r*sb;- 9.y n ssv4n 7jhort from front to back, the person is likely to sufp-b7dnv;js nh cs )r*4e.vys9fer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected wib,b ,sxyq7 + zxyk/wp1th

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 shmd6(w8tdk7m nhf 0i2 kort from front to back, this gives rise to a vision defect that can be corrected by uw02hdk fm8n6 m ti(kd7sing

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 a magn3 3j rdopo+- cx9gbb 2vav4o*qifying glass?

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
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a nwk2 mfiimw 0:/8y,+gd euy5j very large diameter objective in an astronomical telescope m2+mf 5nwy ik/: wdugi,0ejy8is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed bq-a:e4 cdtv 2x1xqsa: y a refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. What effect will 2acvxt -4d:a:xqqe1s 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 visiblewlqcp/v :z l:6tzk +w9 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 objective lens of the telescope used.)lqp 9wc::zl/v+tk6z w

Correct Answer:    
Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A refracting telescope has a magnification29ch qx 5i4 d-fdulxq8 plyd)yc3/r e,)-sbzj $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

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
22#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  With what color light would you expect fxe*33 2 urj rw(95*o9retomyes 8pnlto be able to see the greatest detail when 3e 9twe(fn3mxjer2ro 9r* yp5*8slo u using a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer fr2wa 6o.ol8k27kj-9- dmndr tam/a jfkom

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
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suff)qqt7 qa4cly,,m(u(m ntg q8oer from

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
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to the ability sg:)g 8vely8f 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: c;su(ae o*kg, what happens to its resolving power assuming that all other factors remain unchanged? Its resolvinc g;e*saou(:kg 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 dioptea8wn 1fr 7zx9,m j3i f;ooe)kgrs) will allow this person to see disj3,nmz8 r)o7fx9gawiek; of1tant objects clearly?

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects0et6ym,8zn +bvgc vl8i(b(f d more than 70.0 cm away. What power of lens should be prescribed if the glass is to be worn 1.bd (yz(tcb0ve 8nvigl, f +8m600 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 /ofe/p xhg:5z s0cll*)u32v 4azzajhlenses have power of -0.15 D. What is the person's far point if the xz4uaj/ s 3/lehvcafl50 pzh)2z og*: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 farsightednesh4 36b5qfu m rdt6t*cms where the uncorrected near point i4dqf3 * m66uhtrmbc5ts 75 cm?

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted person is 1er+ h la(7k2rm l-8c+kxowy 6u00 cm. She places reading glasses close to her eyes, and with them she can comfortably read a newspaper at a disx a+6klh-e(8w r7kyocu+ rm l2tance 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 25 cm from his eyes,gvex) eh(s ,1-m6 dg+l*adjut if he wears glasses o( l xasegj,*d eh)m+ 61ugvdt-f
+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 focaltwlkd-by jlif+*77ydk0y z/) length of 10 cm. A person has a near point of 25 cm. What is the magnification of the lez d7*7+b yl0jlw-/y yt)ikdkfns for that person when their eyes are focused at infinity?

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
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 point ofkc ws4sj+ f0/*hok;qz/a szx z (u 4tzub;da62 25 cm. What is the magnification of thd tqfz(z;k js/au+o c s *4zk/abwu;4z62h0sxe 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 leng2 2 3ydeokn+/ kfvd6uvth of 7.0 cm. What is the magnification if the image is viewed by a relaxed eyk yv2f 23kdndu6o/+ev e?

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 as a mao 1cc7jwlp ,amkx7q 7*gnifying glass. What is the maximum possible magnificatioj qw ap1o7l*,cm7kxc7 n?

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 mag du d8yirc04z(nifying glass. What is the magnification if the person's eye is8 zyu( dcrdi04 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 cm,x1fo*i ; yp;eg 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 a1; g;e pxyifo*chieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal f atv- :cj 3.)e8qddmnlengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to use any two of these ddaqe 8 3n-)v .tj:mfclenses 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 lengtttv v9a.t el :mb:+l9pxye88gh of 200 cm and its eyepiece has a focal leng:tlt xpye8vtbl:9m e9.+ g8vath 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 o+:lydwx2 any.wd z5m x4szd:s)9,7 1t za hvdzf 10. If the telescope has a converging lens of focal y1s)xzd.y7s+hdwnm5 tv49w d :dlz a2, :xzza 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 telescope x96 *rmk8izkrwith a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting length of the telerxi mkr*kz 968scope?

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 limited to a x36npm*nk vmo7 v5z/jlength of 20 cm, what is mj3 nk v6x5 nm*/7zovpthe 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 eyepiece wsy 2c 00+fpl 6alrkj75ghh.sof focal length 20 mm, adjusted for minimum eyestal sw p7+50r2khgyfsl 0 c6j.hrain. A blood sample is placed 1.5 mm from the objective. How far apart are the lenses?

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
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lens of f5t+qnh z wk2, yezt01kocal 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. What is the overall magnific1 qkz +ntw t0zhke2,y5ation?

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 andvny4t d-0dkb5 an eyepiece of focal length 6.00 cm. If 4y- 0nkdbtv5d the two lenses are separated by 40.0 cm, what is the total magnification?

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
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm barrel an)odca7z lt1l 2d an objective with a focal length of 8.0 mm. What is the focal length of the eyepiece to givet2ldlaco 71z ) 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 deo-ca) kbe*i )mr1 *25cingyOrion 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 re5e)ncd ierky*- mc*ag21ibo ) solve 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 wp77ib 8t2lz2w yw 1ermhich are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of light used il y7wp2r7zeb1 2w8 tims 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 1.5 mm ajuy:r:xc- 0 hjs the illumination is increased. By what fa -0:j:jcuxyr hctor 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 Telescope has exbc z ed/wh) .q.bhw,xrtl8mr;8;f, been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve if the wavelengt88 d qh;frwxerbhm,.wbt / lz;c,ex).h 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 01:05 GMT+8 , Processed in 0.094656 second(s), 114 queries , Redis On.