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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 th a :z)2d e:h1w*sl qp5tbno,fl ;d6tcme film is exposed in a camera is determined by the,d btozw1l c6:d2 *qhl:atfsm;) ep5 n

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching thez+z vki k t48rq3x5pir4-y yt8 film in a camera is 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 lens-film fwj45-apoo 9ma ,k0i,d w ,wmhdistance may be varied by sliding the lens forward or backward with respect to the camera housing. If, with such a camera, wa,-,k9m 5pd h0jawo4f, moiw 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 view002jim8we vrwjr,pend 53,0aa4oc xr that corresponds approximately to that of normr8j0mav4 p0wd3 ne ,erxw,ioa25cj0r al 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 magn*yt+.je xkuil(5v p f4ify 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 fuz gx,6 jnrd10ilm with a wider field of view than that of the eye and through which o 6r ,01uzxnjgdbjects 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 following ways is a camera different from the huovd-vorze6898 wm0pm man eye?

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light by the ey 6e7 9djcj7k+ pgz8mage occurs at the

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an()c7y 0fl c vgnoymq0 vy)t90h 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 ca (0cvyxxepk;9bvi 4. un 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 pers2spbd-2s(z-kan 1zmhon is likely to suffer fro (dh pzns1bkm2-2zs -am

Correct Answer:    
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Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usualwf .sk2 ajwhlo1- ; o5hewdu,(ly 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 f2a,ooh-i edi24mt- tlrom front to back, this gives rise to a vision defect that can be correa iiot4-2h 2o-tledm, cted by using

Correct Answer:    
Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball 3fl )g,t4lajtis too short from front to back, the person is likely to suffer frofj,3ltt) lg 4am

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usualun7x5gsmu ru.jvca ua 4 8z-;*ly be corrected 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 frondgp5ubg 3:vy ld :n*j4ip- a1ybc b+f2ff *aa/t to back, this gives rise to a vision defect thatp-pfl :ybac231a/a+v* gg:jdidu b b*45yffn can be corrected by using

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifying glak-lug* r0lvoj(92 hkfss?

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 astrono0z(sm fm:zo8 zmical telescope 8fz mm (so:z0zis

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. Suppose a+ 85 wld 2wknpuzm,a9xn opaque screen is placed in front of the lower half of the objective lens. What ef,wkulzp w92xam 58n+dfect will this have?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has 7y a3tr;mh 0*cnkw-fz h*mdw( uniform sensitivity throughout the visible spectrum, in which of the following cases woudfhzrmh 7t3(*-w*0a;wcmny k ld 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 has a m57zc)hs*vp mnok7 ww+agnification $m$. 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 to see the grk-fdffi 1n0u: eatest detail when using a microscope?u1 f:0nifdfk -

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer fro+wd 3rd:rff(w m

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer f(rtwvek5 j5rod1h, kzo;: f 2orom

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a mictyp47aa xda9g--*wz croscope 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 happenaeo,: p(pm(kf72cnv xs to its resolving power assuming that all other factors remain unchanged? Its n(pm 2paf, ox:cv(k7 eresolving power

Correct Answer:    
Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person ha ot-gb 04yiba q:*or8is a far point of 18 cm. What lens (in diopters) will allow this person to see distantti arb0yo8o4:*q- bgi 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 /2d- t9ap itvz(sjmn )power of lens should be prescribed if the glpzvit n9() /mj2td-saass 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 haf0y 5n+od1upg ve power of -0.15 D. What is the person's far p0 ny 1ogp+fd5uoint if the glasses 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 wher3wn 8y1jj3lad+vy:re fs;/xd e the uncorrected neanfa ;wjeyx 8d :ylsv33+djr1/r point 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 phy)l)s- 26g hmkno bt8laces reading glasses close to her eyes, and with them sm-g2 y)6sb8l)ohnk h the 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 e 1adtig 8-(ffsu9gnvo4 u) ,smyes, if he wears glasses uuivffag n8ss4d-o,(m1)tg 9 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 o9ose f( i*/*,ur bmkjzdl .ls(f 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person when their eyes (r b/lk so*fd9el i(j,*s umz.are focused at infinity?

Correct Answer:    
Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a fodvp 6 ,oohko*4cal length 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 their near point?ovh6d,oo* 4k p

Correct Answer:    
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Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass hasoa w 51zlp ,nq*zzq.-s a focal length of 7.0 cm. What is the magnification if the ima*s5.q 1l aznqz,op-w zge is viewed by a relaxed eye?

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 foer k*(uaiuiy-1 m2oha)9u4u a 7mqa2scal length 5.0 cm as a magnifying glass. What is the maximum possible magnifica*)(1o9se hm2a a- 4u qai7iyru uakum2tion?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focal /t.orz ,ne h)hlength 5.0 cm as a magnifying glass. What is the mag .et,rzo/n h)hnification 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 cmkej s;3wv:0tw*6im+qfnq 6/ ryb(p he, and 16.0 cm. If you ynh ev6t3;*rjk6s :0( w/bmq +qfeipwwere to use any two of these lenses to build a telescope, what is the maximum magnification you could 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 cmz:+vgyk.dl/)0 efba9l s6 n/zb ;c kra, and 16 cm. If you were to use an/z0a)l/sdgbak bc:6.lnk9 ye fv ;z r+y two of these lenses to build a telescope, what is the lens separation for the maximum magnification telescope?

Correct Answer:    
Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telesc/8tdif;zw;ryx6 m l ead4p7o7ope has a focal length of 200 cm and its eyepiece has a focal lenmt7z 4;yd;ore6x a/dpl 7f8 wigth 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 astr;zfxdbov pn.c+:qc: 3 onomical telescope with a magnification of 10. If the telescope has a converging lens of focal lefpcx;+qob d: .cn:3 vzngth 50 cm, what is the focal length of the eyepiece?

Correct Answer:    
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Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an 9g+kwib-;fnk dd4h /ao-8 rqrastronomical telescope with a magnification of 10. If t no9khrkq-fr8d 4/w-dbga+i; he telescope has a converging lens of 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 p2u.tjmgueb x-(f,nz80f 6bta 10X telescope. If the telescope is limited to a length of 20 cm, what is the approxu x6(f0,n8ugfe- z.tjm bt 2pbimate focal length 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 bag6y, tgtj351.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mmg5tt ygja,b3 6 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 eyepiece of a:c jfq-1,gjg4x1q(e of qrf7w 6b jy/focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the obw(eo1qb,q ff46r/ :- a1y7xgfjq gjj cjective. 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 focal length1+u8jm rqk/;h ,mldn:b /gbfe of 3.00 mm and an eyepiece of f: j kf+nug81r ldqbm/h,;mbe/ocal length 6.00 cm. If the two lenses are separated by 40.0 cm, what is the total magnification?

Correct Answer:    
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Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm barrel and an objechw 97 1 0zrmwn:z+tjdktive with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnificationmh97wzn kdw1t:zrj0+ of 240?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constellataxlz167k gdb1/lrqif0 pe9i9ion 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 two st/1k p9ri6ae gql10 7xdbz fil9ars?

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 apart7/duo71jt s8bifize2 42aekt. If the focal length of the objective is 4.0 cm and the wavelength of lige8utj1oibes42 7k/i2 ztdfa7ht 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 of 3.5 mm+rke 1af5hp0afqb/ 8f kju v0( to 1.5 mm as the illrjf+v5bk epqh 0aafuf081/( kumination is increased. By what factor does the 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 b5r1*chozsrs3 xau z; *j8phb vd3;0toeen placed into Earth orbit by the space shu*u33b os c8s hr z;z*xa5dhor;p0v1tj ttle. What angular resolution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    
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