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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 expose2zprmb*yx6.gm / 6og7qu8 doad in a camera is determiq6yoamg xmo62 *r.u7d8bzp/ g ned 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 0o. k00 rqntfjf cf.7ddetermined 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 dista6mn .qej( k6rwnce may be varied by sliding the lens forward or backward with respect to the camera housing. If, with such a camera, a fuzzy picture n. j6r6keqwm( is obtained, this means that

Correct Answer:    
Mark Problem
4#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covf+kczlqkqh ; r1.2wp 7ers the film with a field of view that corresponds approximafck12 +l7 ;r qhzwkpq.tely to that of normal vision is referred 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 aw,jw,zm2 wl)a telescope to magnify 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 the7 ,4( :myr0l5g4u qtjojiwqys film with a wider field of view than that of the eye and through which objects appear small 4 jtyrm:,u slw(q 4o05yjg7qier is referred to as a

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the foll*c)utom fl/ 0zn8g, geowing 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 by the eye occurs at thengzdaghif;nm f k2if8f 3-16(

Correct Answer:    
Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye can see objects clearl mxamxn8(i3fjgo:zga1; e 3;wy is

Correct Answer:    
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Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at whi1a-c3 dxd qn-d)u. xfoch 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 frrpbh0r uanb l4i)j.9yr.g3yb5/ r irp9k,x7gom front to back, the person is likely to suffe,.7gyurnr i k3jp ry/04ip9lbrg.b)9x r 5bahr from

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usuall: lb7iwpw,z9* guuy v(y be corrected with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too +ry b*ma m3(jylong from front to back, this gives rise to a vision defect that can be correc3m+*y(m ajbr yted 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 backp7 ta:xy ije:-r(q26k xnf (36mwzwf8 nah;jf , the person is likely to sufp wn83xn (aeya7mx- h;rtzf ijfq:f w2:k(j 66fer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usualphe (yr lr9y u05mxfv6ifw9(m1z(ba5 ly be corrected 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 gives risex+nu*(4)pd+36jjbs d -/jnn sglat/, polem g to a vision defep/+sljug)/ *en odj,-ng4s+ jl6m( 3 adnt xpbct that can be corrected by using

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 magnifyia v) eg1+q,hqpng 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 objk gpgyy7d2i9q0 4.-hm+vv ct h1ysr0zective in an astronomical telescophm9 0 hs2 q yi10vrt74+pvgy.z-dkcgye is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by (xu vz.-*lpnja refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. W pvj-x n.ulz(*hat 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 sensi+d(dfbtb-eeqw9b8,joh dpw9 :8 mkf1tivity throughout the visible spectrum, in which of the following cases wo9t+wj-:ed1( bhod fmf b 8,wkdpq9be8uld 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 hay4ysmdfh 4y.n8 byzhte((,i9 s 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 to see tmde 5mn-g1l(y he greatest detail when using a microscope1ly5- nmdm e(g?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suff+b-2oip -gf7pj ily1y(a5sqxbtn3, fer from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffer p /8di-m5a bxez+9 nnxfrom

Correct Answer:    
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Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscu6i 0 gnfc-z7vope 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 tswj0r+2f9 /dnn1hd hfo its resolving power assuminh 90dfdhwn1sfj /r+n2 g 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 point of 18 cm. What lenfc8m2;yngi3 wmts 4/7wp/ mvps (in diopters) will allow 3wm /gm c2 p7;sy8wnvp/m4itfthis 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 cm awaye1/ no9x l(ye1ps9ky d. What power of lens should be prescribed if the glass is toky1pe ls9/yn(o91 xd e be worn 1.00 cm in front of the eye?

Correct Answer:    
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Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted person wears glasses whose lens8 r ;o5nsw g(2p7hjnmhes have power of -0.15 D. What is the person's far point if the glasses are very closes5png8( jh nm2wor 7h; 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 74m3zedlzsr0 uncorrected near s lm04zz3e7drpoint is 75 cm?

Correct Answer:    
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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 glassgp:mewh/i5/ri tr z0-7z sp n/es close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lens power is requ hn/ :zr7w/z5 ps-0pmei t/girired?

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, tq.d2 - mmx1n gdzuu69if he wears glasses oz u.d-2tgmm9x dn u16qf
+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 hkkhbm;9 b57, svok5rof 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 infinitbso;k7 b9 k5,m5r hhkvy?

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 poinljj+.cgsh*hnw9 *v 1 ee x-rt3t of 25 cm. What is the magnifihg3*nj s9 +x j.heletwrv*1-ccation of the lens 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 focuq )bq vkw3 fr(o6v9xm.bgln +;)md;mal length of 7.0 cm. What is the magnification if the image is viewed by umgf dkb)wron 6 lm ;9+q;v.)xqv3(mba relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a conver 9m)q,kz dk23oby 8rwxging lens of focal length 5.0 cm as a magnifying glass. What i3 y98womz q,r) bkdx2ks the 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 mavdc/v az(gf +g 7vym-:gnifying glass. What is the magnification- v (gfvygz dc7m+v:a/ 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 cm, and 16.0 cm. dmj lsr0:r* j5 iwd74y*+ pjvk If you were to use any two of these len4sy*w rjlp* : 7ijj05mvkdrd +ses to build a 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 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. n3ha* gc-2y xs If you were to use any two of these lenses to build a telescope, what is the lens separation for the maximum magnification sh -23ngc*xa ytelescope?

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 has ai/fjh3m+6mimj f)zwc 98/jf l fof6jw9ff/)z3mclmh i / +jm8ij cal length 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 ast vb)cl+r 6v pds05xww7ronomical telescope with a magnification of 10. If the telescope has a converging lens of focal vb+sv)xw6d7 r5w p0cl 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 v7* z1dk cpdgi oi9/i5a magnification of 10. If the telescope has a converging lens of focal length 50 cm, w kii7dg9od/ iz 51*vpchat 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. Iud0*uld2wx14 1lx .sobm *nzmf the telescope is limited to a length of 20 cm, what is the approximate focanldmous1 l*dm x.1 *u4 zb02wxl 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 1.4 mm andzqnjb yd+ ;n6o6xo+h; an eyepiece of focal length 20 mm, adjusted for mini;od;bny6h+6+jxo znq mum eyestrain. A blood sample is placed 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 eyh0 t6jq j 207w.qryqirepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the obirw00j 2qyt7q 6 .rjhqjective. What is the overall magnification?

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has8 u x2wb2xrx2m an objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 cm, what is 8xxbmu2rxw 2 2the 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 with a focal lxinp5 z bidj ;0 00k45ystmvz-ength of 8.0 mm. What is the focal le 5pizj4;bmtsdk -0 0xiv0yn 5zngth of the eyepiece 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 an ke)y1e/cux*hgular separation of 10-5 rad. If the wavelength of the l*u)e1yc k xh/eight 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 0.010 mm apart. mihpyw9mm9( 0sb )0tp7 h+sbdIf the focal length of the objective is 4.0 cm and the wim tw+bh09(hmybm) 7pd s0s p9avelength 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 person'sh.8 .wp5m.lenq+ -chzhaeh(pqz i44q eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what p+hqhzn.cewm-h8lz.5a4(p q q.4 e hifactor 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 p k jfyuh:;a8exl qfc)l e0-;/4dx;eg vlaced into Earth orbit by the space shuttle. What angular resolution could this telescope achieve if the wavele8/4:;eljk vly-ea;egf cxuq 0f)xhd; ngth is 500 nm?

Correct Answer:    
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