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 :.. hpdfb +ue cj y3j)l9vb9jtshutter is open and the film is exposed in a camera is determinedpfecvdj)l:+tyj b hb. 99u3.j 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 camera is 1q4lr1k+zgqno41dufu48rtw z+f8 yj 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 2r2kqhnqfrfv)j 33r 6 lens-film distance may be varied by sliding the lens2j)q2kq 3rffvr nh63r 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 with a field of view that correspon gt *b2uva0sk3ds approximately to that of normal vision is refev t*g3b0ukas2 rred to as a

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
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts like a telescope to magnify ima(m z u+ty0:i8 ey jng0te*:oqnges 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 o0rbv9u 6o1a8y iv)hkthat of the eye and through which objects appear smaller is)rvov 8byo0u19h 6ka i 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 i+zj a; b/m3pecamera 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 occmn c -h+*g 8b9cjchl1uurs 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 clearly isztd ;9kd0xmn h+2v5ee

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eyezi31gn )lm5j g 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, thedq1 *)iz5jhyu 3a2xc r person is likely to sufferx)c*uiqyz 5hr2 3j1da from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corrected b 59h gl3yvv/uwith

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 bacsh 78mp e7aw)zk, this gives rise to a vision da7 pe wsh87)mzefect that can be corrected 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 is zh7d lyis *f37r,sr*7pj3uf htoo short from front to back, the person is likely to suffer j73f su7**zrys3 , hdlpfrih7 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
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected withozdkv3 o-d.,m

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 givea e7te4)4sk:d* b8zem -bq doys rise to a vision defect that can be cor:qmd)b-s4y4zetd 8b*e oaek 7rected 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 v mq q yb; i4:gj/whzs3:gmgc 6:x(7qka magnifying glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason fhc8h y8u0t6ci or using a very large diameter objective in an astronomical telescopeht 8yi8 cu0h6c is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. Supp u0.)rhp 0locy9v; 4n5tb, h qxnrq:xvose an opaque screen is placed in front of the lower half of the objective lens. What effect wi,c )q b;lo9 htxu5ryprhx4q v. nn00v:ll this have?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform -k;hefs s0,ggf. 7g0it tw(plsensitivity throughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lens re.gs skigepgl fhfw0 -07 tt;,(ferred 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 telescopnyw) g:. uwsa70/)aq k ktfef)e has 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 expecj xgx9qn8 q+m4t to be able to see the greatest detail when using aqg q xjm+4n89x microscope?

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
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffenwo 9d8b q/w1a go4s;wr 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
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer fron83: l.ba cdzk 9yell qu.2qfgf s.y/2uxo02 um

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to the abimkqp- jm:ke:;719k, 7ae zg dnajdz0tlity to

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
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of a radar dish is doubled, what h4,84b hr k96boxgkfzy appens to its resolving power assuming that all y9ghr 4fkzob ,bx6k 48other 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 pointrv l4zkfze*2ah 6c(c kc1*c(y of 18 cm. What lens (in diopters) will allow this person to see distant objec(ylzeh cca 1 6(rz42k*cv f*kcts 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 power of agkt9nhj xi;; lg/-y2 lens shoul t/g-a;ni klhyxjg ;29d 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 glass4 ,o q,t(edjix*2drgf 3qcyg.c5 v(qq es whose lenses have power of -0.15 D. What is the person's far point if the ft v.yqdg5dq 3 (cxj,e cq,og iq2*(r4glasses 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 correctmkbi 3q*a (px. for farsightedness where the uncorrected near point is xa*3iqpb (k m.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 100 cm. She places readingikqr8g q +0wvw .r41kc glasses close to her eyes, and with them she igcrrkqk w+v 41.qw 80can comfortably read a newspaper at a distance of 25 cm. What lens power is required?

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
32#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A farsighted person can read a newspaper held 25 cm from hn(gu50f boza:sw-+l his eyes, if he wears glasses ozlogwhsau 50b-f n: +(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 focal leoqeisp ; 0rj,6ngth of 10 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 0sriqpj,;e6 o 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 .ykh.u xa0vb3 has a near point of 25 cm. What is the magnification of the lens for that person when their eyes are focused at the30hyubx. ka.vir 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 isz ;vcc nx7;tw. the magnification if the image is viewed by a rec7w n;vx.t;c zlaxed eye?

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
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focal length 5.0 cx9w k 1+)5jp 9xyyoigrm as a magnifying glass. What is the maximum possible r9g)1jk9ixy wo5x py+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/;4kkv5yv jmcxs489:u rd szu 5.0 cm as a magnifying glass. What is the magnificatiovsx: y9sv4k4 /8km cruju5 dz;n 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 cm, and 1x;vu-6xk:2/czqlsgasv wpq, k-/b9q 6.0 cm. If you were to use any two of these lenses to build a telescope, what is the maxb /qkqa/;lgv, -: x9spxqwz-sc2u6 vkimum 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 16 cm. n;xpnj3tzjql w,.php l.0,,gIf you were to use any two of these lenses to build a telescope, what is the lens separation for the maximum magnificatin .n j h,,p,lt. plwpz3;xjgq0on telescope?

Correct Answer:    
Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telesc54ejm5 aj uf5aope has a focal length of 200 cm and its eyepiece has a focal lenjf5 j5ame4 5augth 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. l 1vb62it* 0srh-rb +xgs2ok wIf the telescope has a converging 0bhrx6o -21t s2w *bgkslir+vlens of 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 astronomical telescope with a magnificat:qg23k)u t36jhym wfyon 7v;j ion of 10. If the telescope has a converging lens of focal length 50 cm, what i6jo;2v q7t nuf 3:mwy)jy3kh gs 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*5y d2 0po(a xfcggu)m is limited to a length of 20 cm, what is the approximate focal l fpmgu0o 2g)c x*(ady5ength 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 of fvgm 8qaf4da2/zh be9wp 5n 7.qocal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. How far 42 f5g.9dpbaa8 qw/n vzmeq7hapart are the lenses?

Correct Answer:    
Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objecti.jxvjtag,. yygf, ht1 ::n; xdve lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted fogyx .f .htyd1::a, jvnjx;,tg r minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the overall 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
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an objective w3:au: w5zjl hd7uw 6c9o ylj2oith a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lul:o2jo ac9 7y:uh6 5z3wwjdlenses 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 a ss w;*qqgjc5-nd an objective with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a ts 5;ws-*cqgj qotal 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 separationbb4i w 26oot5r of 10-5 rad. 4 bo r26oi5bwtIf the wavelength of the light from the system is 500 nm, what is the smallest aperture (diameter) telescope that can just resolve the two stars?

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
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is designed to resolve objects which are 0.0+jd djt/dk6l-xp *u. o10 mm apart. If the focal length of the objective is 4.0 l*d-td6 ojj.dpx u+/kcm 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 wh:9ldq1rph 1dx (eydq/3hi j:;)z rk of 3.5 mm to 1.5 mm as the illumination is increased. By what facy) h (1 il:ed 31z dkhdw:xq9rrqh/p;jtor 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 placed into Earth or 1t+)6k1lc/ hj9lmt huvbk6sbbit by the space shuttle. kl lv+11 u6ts9mb)h 6kh jtcb/What angular resolution could this telescope achieve if the wavelength is 500 nm?

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
  • :
    •
    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 00:59 GMT+8 , Processed in 0.106951 second(s), 114 queries , Redis On.