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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 the film is exposed in a camera is . jl eqqt:)slr*pp/)bdetermq t lpeljq: .spr*)/b)ined 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 udkkwk t(3jw7r,;gbi.;k2 :rjp ik+gdetermined by the

Correct Answer:    
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Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera the le jx rjb507cg-0zhjn p9ns-film distance may be varied by sliding the lens forward or bach- 0 p57jbc0zjxr jgn9kward 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 vi:: +l6 tyy66u3no)anars ewc new that corresponds approximately to that of normal vision is refer:3c yst6a rl6+ e:n )nn6oaywured to as a

Correct Answer:    
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Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts like a telescope to magnify images *1jerg6r ht9jmpbe ,)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 v(j 4 v(y)0am 9y;c)pq :9bw bkximecsel- 1bcwiew than that of the eye and through xce(c0;9 k1 abv4) ybmp sjc (b-l:mqiw9wy)e which objects 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 followi n;wj 3xtnqx,98duh6e ng 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 ligh 3q2fkiz3j/zmt 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 which an eye can see obcz5f3 b 7h1nfjjects clearly is

Correct Answer:    
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Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at whichwxocz86f n- 0e 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 long from front tt(ea+b 4v0cuos ;3exd c,0xxbo back, the person is likely to suffer t,u0( d 3cv;axscx0eb4b +eoxfrom

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be corrected6kl kd*dp+sq5n)(/vo t kz zk9 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 back, this gives kd7ytz 0f6b4b rise to a vision defect that can be cozb64kyd ft07 brrected 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 persn; mb +d 9:muod l *;vcphtdu;:gvn05con is likely to sufferd nd0;c o vduclubm5;::n9t;pmhg+* v from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be corrected wiz6czj 1b6, a b b-4totbvd:l2qth

Correct Answer:    
Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short from frcy8q,a.dr7meobr )c7 ont to back, this gives rise to a vision defect that can be c cdo7rrm7qy)ecb a ,.8orrected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a ma2zusqa4,hy4y h p j:*pgnifying glass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very large diamet s 7z/t5+h ti;,zgvzk*8izvk wer objective in an astronomical tel/v7 k*iz +sh5t gtiwzkz,z;v8escope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. Supp4vklx5 (b aia*ose an opaque screen is placed in froiv5b4 a*(x aklnt of the lower half of the objective lens. What 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 spectrc9/a s-4ww gryum, in which of the following cas-g cwrw/sy9 a4es 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 hjxiq ln9a 6yoz,6.qmg gs)),zas 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 tf( cnz6p)7+j7zr wyf ce( jhf:o see the greatest detail when using a microscop w(f:jnc+rycz7f fzh6j 7e )p(e?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses sufn0(d.loa48l6g d fxhzfer from

Correct Answer:    
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Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors sufda o(:*ayv ftzoy54 (fsz9dn) fer from

Correct Answer:    
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Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to the abilitz6 mwvwpn 3emr+)+wa lj4u;x:y to

Correct Answer:    
Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of a radar .onx 3:zm5x m7.cjmjycfqk- 7 dish is doubled, what happens to its resolving power assuming that anc -mc xq53 ok jz.xfy.7jm:m7ll other 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 point of 18 cm. What lens (in dioptjg; .p) v l;39sys;ut k/vsmumers) will allow this person to se3;t; j) ;g/vuss vmylpsm.uk9 e 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 cm away. What powekn+oe zwn 5 8q+crh+vz btxs+810o(er r of lens should be prescribed if the +q t8k+nnr e ( ho5+1ecob z0+wsv8rxzglass 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 ptpa- /f j4rxx1ower of -0.15 D. What is the person's far point if the gltpfx1 4ar -j/xasses 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 farsightedness where the uncorrected md1v2 j5wyfvoe,e3m( near poinve21dof3,j(v 5ye m wmt is 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 reading glasse +8leufk ; pf)vog *aa+jma,f0s close to her eyes, and with them she can comfortably read a newspapl m+vffae+g,8a)j*o pf u ;a0ker 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 news 51 fnhd a7nltooo-dw,wx(g( (/fi op(paper held 25 cm from his eyes, if he wears g-f w(otfw5lx((ag n,oodi7p h(on/1dlasses of
+3.33 diopters. What is this person's near point?

Correct Answer:    
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Mark Problem
33#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focal length of 10 cm. A person7e(snn oed j.o /l7)5yed(bxx has a near point of 25 cm. What is the magnification of the lens for that person whbo7(n5(d e)7yndj.e s/ xolexen their eyes are focused at infinity?

Correct Answer:    
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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 p8( .hf pss5s p0-tuxu:iwn 4pxoint of 25 cm. What is the magnification of the lens u8s4pn u :xts.fiw hps5-0 x(pfor 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 magnehb8qsv6;g tr 8ej1hqq3 w76lification if the image is viewed by a relaxed eye?vql6tq 8sg ;h hwe6j 378qrb1e

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 glass.dw-bwi(+8*zl3d rbl d What is thbi wd* bwdrz+ dl-l38(e maximum possible 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 ma+oa 91p0ihalygnifying glass. What is the magnification if the person's eye is re1 yai+plao0 h9laxed?

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, andrg b1;8/ci zpl9wmt2f 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the m9pgw2rlfzt/8c; b1 im aximum 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, an8q)qnx1f o-b ,suuwa0d 16 cm. If you were to use any two of these lenses to build a telescope, what is the lens separation forn-us w,xu8f0bo qq1a) 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 and its eyepiece h i b ( vrq:c2cx*l6torpt-p/f4as a focal l2(/6o tcr iv rl4-pqb:*fxpctength 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 magnificxb,cgfk98y) h8 lyqu o:v3huj9o08c zation of 10. If the telescope has a converging lens of focal length 50 cm, whathoby o8, 3cfcvh 0kg:u8l 9)9z yxuj8q 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 teles45zeee3ha*. ez s;cp pcope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting length oeze; zp4*ecp a s53e.hf 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 ihvpcq1 r0jt5f 9ji 92ns limited to a length of 20 91t5pjvh9if rcnqj20cm, what is the approximate focal length of the objective?

Correct Answer:    
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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 a; 5t pk+hcp,evnd an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm frkhpev, c5p t+;om the objective. 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 objective lens of focal length 1.4 mm and an eyepiece of z0) i8yf ogf/n1rk/0zzdfu95 yfebn/focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the ovi9nbyn50 1k0 z yeffudzro f//f/8)zgerall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope3m moko l--z j6ud()au has an objective with a focal length of 3.00 mm and an eyepiece of focal lu -djmlo6-z()u3oamk ength 6.00 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 xv*p. o j:+1uhad qz 1g7vmy lmdd8;+fhas a 18-cm barrel and an objective with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnifih.yd;x1 pu:dz++ mmqv1odaf8l *g7vjcation of 240?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constel91k /ed/ogz calation Orion has an angular separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is thgk1e9/ ao z/dce 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 ijeo 8to xy4s*s0cp17y*iqk 2 ms designed to resolve objects which are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of ligh 2 io**m17tjqy8xcysp4 ek0ost 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 iq +4*/ ai)megb:zvkteye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum angl iiv)mt ea:bgz+4 */qke 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 been ct8f i+f/ktc4jy1bh45-tdd s placed into Earth orbit by the space shuttle. What angular resolution could this tc 84t+fhf/d ikysc4db j15t- telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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