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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 shutten- pkku i4ri2fa fj3c;zf8r9(*s zv )br is open and the film is exposed in a camera is determined by3u2-sn*r cjb; 8zff4)9v akrp fiki (z 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 the zvd(p8rr; v;0u x8jna

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera the lens-f8xr-in oih* ms*s*n 4mrpx17film distance may be varied by sliding the lens forward onpnm1- r*h*i *8rs4if7sx omx 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 with dx pc*53kk m mvp;*e5ta field of view that corresponds approximately to that of normal vision is referred 5;xpc* 5 kmde v*3ptmkto 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 is (-ox; kfogo6cquoj4 s,2+ vgjreferred to as a

Correct Answer:    
Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the r8cm es;v l4fxo+r1 y(film with a wider field of view than that of the eye and th8xr rols+ (e 4m;f1ycvrough 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 followizs8muh ;a u* )edue 4x8av9j(kng 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 byjtpv:6o4k+) ny gba4w the eye occurs at the

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at whpukp .id7prc dg,m+ em2 zl7 )afu8b;,ich an eye can 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 ob8v hn9kkkh+1 ologo *5jects clearly is

Correct Answer:    
Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is tv/4nbdb0 c b1koo long from front to back, the person is likely to suffer from4/cv b0dk1 nbb

Correct Answer:    
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Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usugyn 610maeg91cm- x epally be 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 back, this gives risefe 2b,j- sdhh .i(1gbb to a vision defect -f2ebs.b (g,hhdjib1that 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 likely 9:52kknvz:qew c 4kg3,lr pmvto sufferq2 wzl ,kn m5c4k9k3 epg::vvr from

Correct Answer:    
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Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be correcb: sby82*gpex ;ld 3mcted with

Correct Answer:    
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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 gives risevy6 e)ek-m 9ks to a vision defect that can be es9k y 6v-emk)corrected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifyinn4tlfl* q 8 peu3/m-vfg glass?

Correct Answer:    
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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 astron5rj5 9y ki uyrd .1 (d3wvyphtz*3wr2lomical j3r5wpd y y*ut1.i(2lzw h rr dy9kv53telescope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope8y-.r euxu8:mvq qf-w . Suppose an opaque screen is placed in front of the lower half of the objective lens. What effect will thiq - .yxvqur f8w:8emu-s have?

Correct Answer:    
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Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitug t6eu *+huya1n4+iq.et6 +kzx o 6saivity throughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closel 1 uiak6 6euszngu4*.+a6yxtotehq ++y 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 has a magnifw6f rf23cbw9ry as3i, ication $m$. 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 yo*bz*or,ab*qg u expect to be able to see the greatest detail when usin*q b,*zogra*b g a microscope?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer f6zsf)fn4z /slrom

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer fror jl/wfdln v:f )n+n;;m

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers s 0va vnb56r-bto 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 itscpm7g pb tw+6prc1 8x- resolving power w xrm16+ppptbc8g- 7cassuming that all 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 p,.tytay prl6d r,zce4*r7 4dr oint of 18 cm. What lens (in diopters) will allow thi6paryrrr t,d74z c t4*.dyl,es person to see distant objects clearly?

Correct Answer:    
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Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects more than 76aw:nc0 ke//4fyteqk 0.0 cm away. What power of lens should be prescribed if the glass is to be worn 1.00 cm in front of thnf/ 04ey6wkektc/aq: e eye?

Correct Answer:    
Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted personh q ;rklf9cp*, wears glasses whose lenses have power of -0.15 D. What is the person's far point if the glassek;l* r,qh9fcp s 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 :* ,iy rhb-j+3 i lvjanw7r8eacorrect for farsightedness where the uncorrected near poin7i r lj83bj raew*va+ :iy-hn,t 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. Sh7 nptlh;x*k,5pqqe 5p e places reading glasses close to her eyes, and wit7 5xqqphp t ;*n5lp,ekh them she can comfortably read a newspaper at a distance of 25 cm. What lens power is required?

Correct Answer:    
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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 wea9nv5;g m+gynr rs glasses 9;5 gn+nmyvgrof
+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 le*z swxqhv84yiq0s z6wq h i5gwe ,:4a(ngth of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person whhiwzw*: i,s4ya 0qv8(egxq 4 hq65s wzen 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 has a near point of 25 :m.7phyz 4*jmxh ;nhvcm. What is the magnification of the lens for that :*7m.;pmvyh4nhxz j h 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 has a focal length of 7.0 cm. What is the magnqnq(3(jxt g.npfn11rbrz 41eification if the image is viewed by a relaxed eye1egrpq 1n t3 (n(fbxq zr4n.1j?

Correct Answer:    
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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 ah: hki4uk kgf p+ (8z-ky)xzl:s a magnifying glass. What is the maximupzz h)4:h8 -kkl:y+ki(g x fkum 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 lengt;+ ijny/pg4,r95df+f k+coy3tors bb h 5.0 cm as a magnifying glass. What is the magnification ifcjbyf+toinfgk +3b/54r + pydro9; s, 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 focs gk8yofp6hl (+) ot .l4n(htcal lengths 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 magnift s(.t)o4(k + lolhcnyp6 h8gfication you could achieve?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses 2gtbqh h39fo: of focal lengths 2.0 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 maximu3g:2t bo9hqhfm 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 a focayvcw+/r )f/s sl length of 200 cm and its eyepiece has a focal length ysrv/s/ +w cf)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 a1svjtna(6z:ntf sk3 ;j x9q,a magnification of 10. If the telescope has a convergin,6t(n1 s9jt;fjsqxaz:a v kn3g lens 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 magnification of 10. x bg fluc b(b7c2i09/y If the telescope has a converging lens ox glc( 09bbbu7i/yf 2cf focal length 50 cm, what is the resulting length of the telescope?

Correct Answer:    
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Mark Problem
43#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person is designing a 10X telescope. If the telescope i , ojfi8wzzo-mga.f/ .s limited to a length of 20 cm, what is the approximate focal length z,mfafo.iwo .gz/- j8of 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 e)++4(0 c ufyuxom7kbuzs*pn lyepiece of focal lengm(yuf*kpzu0 xl7c)ns+ 4 bu+oth 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from 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 eyepilqi,;jk6 ayz,l; / avbn 1scs.ece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. Whik., vs ;ql/jcnza;b s ,l1a6yat is the overall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has nwi*wu w*7k; wan objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm;k7 **nwwiuw w. 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 has a 18-cm barrel and an objective d1 f9,+wz)-kk z0cqlmr( tsfxwith a focal length of 8.0 mm. What is the focal length of the eyepiece to give a s(,k )+1 0lfrwdkctzqz 9f-xmtotal magnification of 240?

Correct Answer:    
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Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constellation Oriu+dvktq) ff 35on has an angular separation of 10-5 r+ f3v 5dtkf)uqad. If 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:    
Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is designed to resolve objects which are 0.01 m k) uk6e5whw6i p6s6w93okeg0 mm apart. If the focal length of the objemhp36 sk kgiw 9)e6e66 uo5wwkctive is 4.0 cm 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 persojxr8( dq/qt, dn's eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does thedj8(, d/qrtq x 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 been placed into Earth orb/s /tacbo4ug 02 c3ig bj1tafi/b84yoit by the space shuttle. What angular rcug /g/ab4oib f34y/s280 jtc i1oba tesolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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