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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 m9 stj1k zk1: xqxptc+9t. 1(yp2ixyv the film is exposed in a camera is determined byp 1:1z ttmpk1(cq2 .ivkyt x+sx9y jx9 the

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 byb ck3n9x. x0rsi((w dy the

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera the lens-film distanc,hlpaw m, q ; l3hgb)3k+nscs9e may be varied by sliding the lens forward os, lcmkpgsa3h ;n w9q ,lh3)b+r backward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtained, this means that

Correct Answer:    
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Mark Problem
4#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the film winyuzcfy+n5 x+a )8ko5 th a field of view that corresponds approxima8 uay5+)x 5znnc+foyktely 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 magnifyt x 59qearkz.)0ew1ti 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 o0sx.6dy8jdtt ; jnn2sdb /iorv f)(5uf view than that of the eye and through which objects apt; sxbrnt(f62.5nojjdsuivd0dy / )8pear 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 camoz1 i:l(klo z4i xk*fr.n qain9o17g0era 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 occurscsmbg3e r :usp8vq 6cr9 np2;, 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 ob-1ta vcksh.hc o ;a 10h,nok6hjects clearly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye .ysy+k n ,e9 xvi/m/xgcan 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, the person is mvr .3,0 0 ftieol0ssplikely to suffer frof0o0v.l,mtprs3s ie 0m

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually b +pfedjv5q75z e 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 front to(6k25 1i xhpev9tagcw back, this gives rise to a vision p(c5e91w2k t avx 6ghidefect that can 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 is likeln7vjwra)v2 r :vyll179smw (jy to suffv1v jw7 7mv2rrj9l:( w )nlysaer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be correctedvwupk6g* 22e8ak vbb ;7tdo e7 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, this givess++r carr/jr2gl z 9s, rise to a vision defect that can be corre2zlsr r g+r r/c,ja9+scted by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifying f wjtw pv s;s9.m721wk2urds.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 o-cx qgdtwz3+) bjective in an astronomical telescope isg)t zwxcqd3 -+

Correct Answer:    
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Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting tw* ,7rz 5rvxs9 +bc,6ycf mxibelescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. W67 f,9bzcv +irwcx*bsrm ,5x yhat 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 visible spectr(w5a bq hznuzdhv4 1k;*loztp21q3 5bum, in which of the follown*q qzhvubtw52; 4o bk 5h1zpd1azl(3 ing 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.)

Correct Answer:    
Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A refracting telescope h*3sk,: r*x;uicnk dtjas 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 wouub:3 gl;/wi xe4oan5*l9cs ss ld you expect to be able to see the greatest detail when using a microscop5/9in4*gas lobl x:u sws3e c;e?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suff9 h6 h2sacj tdquqf-*ck1tfly;s 7;y 0f rk*k5er from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer fw1g lw/y,t6uf nd 6ot:rom

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to e4(*c la m wo/9kl sqpgyd048wthe 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 resolving powu(d2g1wgm (sik0xi,s er assuming thatx( g1(dsk2,ui0gi swm all other factors remain unchanged? Its resolving power

Correct Answer:    
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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 dioptere:,at j52h ojmh2olw6s) will allow tha2:ehjmhj 5loo w2,6 tis person to see distant 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 cmn n4n x.klh+ rs37lj2g away. What power of lens should be prescribed if the glass nh7gn xrl+3. nkjsl24 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 wearv j+i6cfqn 0qob7axg*nr :r(:i3 1 byos glasses whose lenses have power of -0.15 D. What is the pi:n 3qjc : 1(qovo+g7aib6 nxfr0byr*erson's far point if the glasses are very close to the eyes?

Correct Answer:    
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Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed to *05l7i fh t5hyvj,;wb8rz cwvcorrect for farsightedness where the uncorrected near point is 7 y v7w 5 hz0cif*5l;,vhw8tbrj5 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 k +vf-) fzcc98w3fqpje et(c+places reading glasses close to hecfkc+qfje) t+c3-9p (f8 zwevr eyes, and with them she 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 z4fpp+imdjlp4 p -/* st0/fif newspaper held 25 cm from his eyes, if he wears glassess*jz0 mif/-p i p/f+44pt fpld 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 focacbz mi 6899wsmv5q-o l,oa dh; r,nxh(l length of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for t l dmcxi wbv8-h no;,am,9(6hro 5z9sqhat 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. mzk qllzl +c2/( nzw67.jhyv3A person has a near point of 25 cm. What is the magnification of the le7qlk+c/yhz2vz z.l(jn 3 w6mlns 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 7.0 cm. What is the magnifi3(jglav 342+ratz74humpwow cation if the image is viewed byw 3 3hla4z2a+vg(4twm ropju 7 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 as a magnifying c 0g(z+lh y+lkglass. What is the maximum p+yzch( 0g l+klossible 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 uqu6 7w9u*.hyqvlboht 9 q)9yglass. What is the magnification if the person's eye i.6q*u)oq uu lwyv 9h9tyhqb9 7s relaxed?

Correct Answer:    
Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal lenm+8x qonj13cdnp4f ,t gths 2.0 cm, 4.0 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 magnification you could8q+xp,1odn3 ntc 4jfm 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 lengths 2.0 cm, 4.0 cm, 8.0 cm, *q lq/y wmuv; pm7px;15e9ptaand 16 cm. If you were to use any two of these lenses to build a telescope, what is the lens separati;;pm1/vuqw7la*xy m p5et9p qon for the maximum magnification telescope?

Correct Answer:    
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Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telescope has a46dlav7xjd( . owa-zv focal length of 200 cm and its eyepiece has a vadaz (7.wx4 dj-6 vlofocal length of
1.1 cm. What is the magnification of this telescope when viewing an object at infinity?

Correct Answer:    
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Mark Problem
41#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope with a magnification of 10. If ibe2cko0eoqag5:tps - :p h;j3e i;i6the telescope has a converging lens of focal length 50 cm, what is the focal length of the eyepiei i :thbpoqe0o5i;a3c2 se:je 6p k-;gce?

Correct Answer:    
Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telex0 j ;9eol9yquscope with a magnification of 10. If the9o e uy0xjql;9 telescope 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 10X telescope-p ut8gr48gs c. If the telescope is limited to a length of 20 cm, gcs-gp 8t4u8rwhat 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 objectivetk 0+j71ewe wczlxb9 c;z:d -u lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is plt e- l :k0zb;cu9d7ew1 w+xjzcaced 1.5 mm from the objective. How far apart are the lenses?

Correct Answer:    
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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 eyepiece of focggg,/whhk d.)ju 1x v40sln;cal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the ove;u/,.c hg0x d4)sw kl1jnhgv grall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has tgr7tte/ v6(rhhv;*w an objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses arer v6/g;t v(7h hwe*trt 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 br, 7sjdml6gzw 5h+;0tmer+ uo arrel and an objective with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnif,ghl0+ +wum str ;re6m5dzoj7ication of 240?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the con suz6/k1hcw6 lzm/3aw stellation Orion 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 the t/ckz/awm1 6 6hlz3s wuwo 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 are 0.010 mm apart.ych w5o cvn(qhgi8 snvcf; --, 2,ri4uk ov+-c If the focal length of the objective is 4.0 cm and the,k+8o c(wcicu-5 yrv ,;nchsv2o4vqgn if- h- wavelength of light used is 550 nm, what is the diameter of the objective?

Correct Answer:    
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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 mmeu;* 3 xrb6 trw3qqg k49hxhp1 as the illu gth1r whekqu436bp*x;9rq 3xmination is increased. By what factor does the minimum angle of resolution change?

Correct Answer:    
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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 b9dra )h(:u9h z lpf/mxy the space shuttle. What angular resolution could this telescope achieve if the waveleng xudpzh/fmr 99a:l)( hth is 500 nm?

Correct Answer:    
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