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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 ope(c b-axe+n 8 ajk6b)-a:v 0ht z;kjfijn and the film is exposed in a camera is deter ex -8ka(jbn+tb;a6j:)h- czfvi ak 0jmined 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 determined by the6 gmyf:.xu g:pb 95j/dz9c kve

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera 93g/kfvw uz9.rsrh +jthe lens-film distance may be varied by sliding the lens forward or backward witgj9rrkz9 fw ./ +u3hvsh 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 with a field of view that cory)a/zhe.a uh5r0b+,lgtcd w4responds approximately to that of normal visio40w. /d)eru btzl,+ga c5hyahn 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 images is referred to as a6zk:lyix*v7 e

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 that of ;3ddj3huj /n tthe eye and through which objects appear smaller is n/h;u3j jt d3dreferred to as a

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the followin lspbw 7zfxgy :- 5e-gflnhwz2l f:946g ways is a camera different from the human eye?

Correct Answer:    
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Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light by the ey ymsjqx:gok 4205 f 4ei6r1dnbe 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 objectpp* dzk 6ml lv w.w/u,9gu 0cpoypl3z6(:(dw vs clearly is

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at whb 91pj y;il6huich an eye 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 lk:e 4zo plrcnmka+/1 5 vf/dd.ong from front to back, the person is likely to suffer fmdvcn+edk: 1az 5rk.olp4f/ /rom

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usuaf.ql2my s1qfe (t c.kj,. (vvhlly be corrected with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball i3h oezxp-squbq :5j zrb+t81,s too long from front to back, this gives rise to a vision defect that can brt- j1szbh,z3+p bou5 xq8q e:e 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 t (trwm6a vrdd1k n6 elqzd9u670dl4,lo back, the person is likely to se,nad 0vl9( u61d46r7llwkzd trm6dquffer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected+4(l6rnn 0rnf- 2m)ruvbw0hqg4d va y with

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is o2yc w:/dwx kpf0 f.+dtoo short from front to back, this gives rise to a vision defect that can be corrected by usioff wwp d0yx:kcd+/2.ng

Correct Answer:    
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Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnb,a1/zc(/or d xl9zv)vmg 0 mlifying 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 astr k pizjk-;3w8jonomical telescop -3z;8ipjkk wje is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. Supsl -omsq5 ib 4.zuw k(,p(7vuy.g+zd qy,1ooypose an opaque screen is placed in front of the lower half of the objective lens. What effect will this have z, z4,i+gyookvbwpsqsu d(.y ml.-7o yu1q5(?

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 spectq a d8ndm )i(r99d4rckrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? 4 8nm9k d)q9rdra(cid (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 has a magnificatiohgd;fn82gub4(2jg l3t0 t pv tn $m$. 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 ablehg4r w4tg 5)ay 0l7hsgihd5z; to see the greatest detail when using a45t4ish dhlg hw5g gzr;y7a0) microscope?

Correct Answer:    
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Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suff5t* .u njew-et(s(yorer from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suff0 ndd4i r,a.p7s3pbeqer from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a mic lctot53-w* ruroscope refers to 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 mdu vhe:u 98c9 blc-z8resolving power assuming that all other factors remain unchanged? Its resolving-e9uh clzv 8:8b9cu dm 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. 03kue zu afp-: vulg;* What lens (in diopters) will allow this person to see distant obk -fu;u3e uz galvp:*0jects clearly?

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see cle+i0maxtzl42csj5c a / / bxnt-arly objects more than 70.0 cm away. What power of lens should be prescribed if the glass is to be worn 1.00x-sxcl a5/4bc+0a it jt/2zmn cm in front of the eye?

Correct Answer:    
Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted person wearsu1lpba6n; 5yyi, mf2l glasses whose lenses have power of -0.15 D. What is the person's far point if the glasses are,byu5ni; fy l1am2p6 l very close to the eyes?

Correct Answer:    
Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is neewlgt+ p vy*16tded to correct for farsightedness where the uncorrected near point is 75 cmy+6g l*p 1vtwt?

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 gsb( p.gcv*o+y lasses close to her eyes, and with them she can g v(p+.sy* ocbcomfortably 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 25 cm from his eyes, if he wears d2 p bcmp.;yzsqee,d*uml7- f).oid1glasses do s 7 u)c*dqyp ei p2,lbm.;fmedz.1-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 pi5c9 3 bqvxz-ov(qtu:oint of 25 cm. What is the magnification of the lens for thaxz: t3 b-qvui(9qcov5t 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 h( eiswkz*.lgb p4b*.has a near point of 25 cm. What is the magnification of the le .pl4sk**gh bi(wbze.ns for that person when their eyes are focused at their near point?

Correct Answer:    
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Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass hasivz b( 2m lfviml nkn8n4n4 mwe28y42* a focal length of 7.0 cm. What is the magnification if the image is viewed by a relax4lnn2z4i (kle m2m8nf*m iyvn8w4 2 bved eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converg6k9zunw/t16 .g+g(hkvrdg 5mcktplt /d--zcing lens of focal length 5.0 cm as a magnifying glass. What is the maximum possible magnk-gkg(lm htzv6.z w9t r5+gk- c/d dptc16n /uification?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converg/nrwr.k;xir y74n/io ing lens of focal length 5.0 cm as a magnifying glass. What is the magnificati /nrrr4;kw/ yxo7.niion if the person's eye is relaxed?

Correct Answer:    
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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 ys. wxfp8x p(;cm, 8.0 cm, and 16.0 cm. If you were to use any two of these lenses to build a f;yp.x(w pxs8 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.;p x.-nkf ixg:0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to use any two of these lenses to build a telescope, what is the lens separation for the maximum magnification telescope ipn-;gxxk f:.?

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 and its eyepiec ja86kfki (.ele has a focal length o8kj6f l(.iae kf
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 astronomica,ua4zf r 3xx/dl telescope with a magnification of 10. If the telescope has a converging lens of focal lenfz a /xu3rd4x,gth 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 meni wnk4i9;j,pj.oy- agnification of 10. If the telescope has a converging lens of focal length 50 cm,kp.;-49o nniyi e jjw, 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. (v qwstm;b bx u4h7v+:If the telescope is limited to a length of 20 cm, what is the approximate focal length of the ob: svtb7qv;bx hw+mu( 4jective?

Correct Answer:    
Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lens okvww.: 1 tek4mf 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. Hwv4tekm. k1 :wow far apart are the lenses?

Correct Answer:    
Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objecti;o rl ibl663tpve lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for mi 6rolpi3;lbt6nimum eyestrain. A blood sample is placed 1.5 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 with a fo626qj;n*eskcf0 xlv bcal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 csq v6le fk6* 2b0;jcxnm, 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 l1*b86n /cuqc8f 7kjxzm gw,(b *imsp objective with a focal length of 8.0 mm. What is the focal length of the eyepiecp*sbfc (x/,c1m n*jb87i6qgmkw8lu ze 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 Orion has an angular separation of b vv,j,(6w6ph*nanbw2 v7fqc10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallest aperture (diametej,vn67hcp,2(vabb 6 f vqwn*wr) 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 d :/g7ud9t) u4p0xblngdy)nk d esigned 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 thegktdxn79u dgyl))0d /pbun4 : 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 d6c8zs1vdc2 aciameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum angle of resolution chanvc cc81dzs2a6 ge?

Correct Answer:    
Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting Hubble Space Te2mlt dlvo (y4o *sy-c9dg/fg+ fm6k 4qlescope has been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve ivg2clf f y sm(l9om/y+kto4d 4g*d-6qf the wavelength is 500 nm?

Correct Answer:    
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