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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 cwp t5 u*lbv*;hamera is dep*h *lbt wuv5;termined by the

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Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the film in a camcm9u y:dp9o5q era is determined by the

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Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera the lebn wyo44;xj **sy2+bt ya urp3ns-film distance may be varied by sliding the lens forward or backward with respect to the camera housing. If, with such a camera, a fuzn* xyutsry3p2b4w ;4by +*aojzy 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 thsnads z4x- ,ppg-4hyp6 2p9dze film with a field of view that corresponds approximately to that of normal vision is referd-dxs- pz p 6244phzn,a sygp9red 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 62tn7zy p.skn2umv/ +6ot0tud 1erfh to magnify images is referred to as a

Correct Answer:    
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Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers cz3 vodb0y-5m the film with a wider field of view than that of the eye and through which objects appear smaller vo0cz-bd 5y3m 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 human eyyl(q3mgjvubo r82h kq)o q d/z +o07e6e?

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 the(yj9-u9+kv.,gv jc afcye*ul 6bv ) zr

Correct Answer:    
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Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye can see objects clem9 b5jmyd+c 7i29u 9rlbc hvgzxy05 g5arly is

Correct Answer:    
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Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which a)e5, 8smxll9hkukp : )pze opcj5s osw8 d/-*nn 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 lox+wi83brp a( m( na1 ,vjnujz(ng from front to back, the person is likely to suffer frn(am ivr+3xza,jpw1j (nu(8b om

Correct Answer:    
Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usually be correcte4n)f*qi 9 ckvid with

Correct Answer:    
Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long from cfgy 0b ewbrh),2 ih27(hqae- front to back, this gives rise to a vision defect that can be corrected by us,7eecbb iw)2y 20hhfaqg-( hr ing

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 v*h lpx 9f3 hswmokrdi41nz65xt3/s/ likely to suhdl o/ s95hxf*rv4 wmpz/3t6xki31n sffer from

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usually be correctex 5cjau.lifc5z8+yz 7 d 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 rijp uetk ,zugt4 m366-jse to a visionkje -6t u,3zpt 46jugm defect that 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 gl2* -bntwizxvt4 g: y qxd/57ddass?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using; jn s9pcg5 eg+s:y -,upsn(ee a very large diameter objective in an astronomical tel,eegp +;(ss9eg y -up njc5n:sescope is

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescope. vfy,d6o0tax :sful1;mpj 1)h Suppose an opaque screen is placed in front of the lower half of the obdhfupxf 1l 10,sv;oya6: tm)jjective 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 thew gcdig117 zt: visible spectrum, in 1g7gwi c t:1dzwhich of the following cases 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 has a mag 2r+wko*ng5m 3yai16tdt bz9lnification $m$. 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 greatessk9d+8xvb 1ph jg:: 6rne w*dft detail when using a microscopx nr e:86v9d1gf+b:jk pshdw*e?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffe1od0* 0mh*ogjd /y loir from

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffhbyrz3fmk +xz51hqm /0jrmz)9pme9t lz q68.er from

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to the abids1sr;l)d(w ,hd((,ouwm iqsnb v9.slity to

Correct Answer:    
Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of akw u.h /r;+jt) gjl(ek radar dish is doubled, what happens to its resolving power assuming that all other factors remain unchanged? Its rkte/wuh.+ )j ;gljk( resolving power

Correct Answer:    
Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person has a fjq wqi pdtj9ss2 c*;o20f79avar point of 18 cm. What lens (in diopters) will allow this person to see distaot29q 02jcias7 d;s *w9qpfjvnt 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 70.0 cm away. 7u6myxvv(g41bdtl 2b What power of lens should be prescribed if the glass is to be worn 1.00 cvvtm1y76b4xd 2g(ul bm 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 r*fg4lz0e *ca have power of -0.15 D. What is the person's far z*r*ge0 c 4aflpoint 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 where the uncor-z a)p;o fiy93xagj 5hrected near point is 9-;pa jaxyhg5f3o )i z75 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 gla9 2a+yev qkj w/gnp,l9sses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. Whk jyw+9n ,9gqpa/le2vat 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 eywv. 8bgshf/co b,e*r( es, if he wears glas cbf/osh*.vreb8 w,( gses 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 person has a near point of 25 / 7/;n :xdkrjum/v ptmcm. What is the magnification of the lens for that person when their eyes are focused at infini// tj;v/kprudm nm7:x ty?

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 point of 25 :slf7dc7yrd 5 cm. What is the magnification of the lens for 57d:dyfrls7 c 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 has a f sj- 5wq0lz;caocal length of 7.0 cm. What is the magnification if the image is viewed-;slac5 0z jwq by a relaxed eye?

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens1::*h mhdb3 bb1aqp4 bzlmf )c of focal length 5.0 cm as a magnifying glass. What is the maximum possible magnib *hfbchz:)a:b41bm3q dm1plfication?

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging leu j5gy6 nf5)mvlf73jlns of focal length 5.0 cm as a magnifying glass. What is the magnification if the person's eye is relj765 fnv5 guf)jl3ymlaxed?

Correct Answer:    
Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal lengths 2ggj:k- oyo m3mshlrgs1, ) -s,*cr-bf.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to use any two b1s: -c, jkghgros-o*g f3lms )r,m-yof these lenses 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.hx8a )) .zlh6s.lzlsp(f, co f If you wer8lsh6of,lx c)f(h) s.zal.zpe to use any 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 telescope has a focal length of 200 cm and its eyepivb. e6l: ,x:xy sxtyb9ece has a focal length ls9:,bexbxyy : .6 vtxof
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 wlu-dd( g /+qyt+5ln 8cp-c7mu 2 ufaklith a magnification of 10. If the au lk8- gu7dc++c5ul 2 qftp-nmy d(/ltelescope has a converging lens of focal length 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 astronomical telescope with a ma9 pw4kw6 gqq(agnification of 10. If the telescope has a converging 6wg(49qqa pw klens of focal length 50 cm, 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. If the te5 x5*vboa7 fw86uw pmolescope is limited to a length of 20 cm, what is the approximate focal lena76 xmbupf w8ov5wo*5gth 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 and an eyep59wh1wn fh z0j+rfr6piece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample 6 rzhjf0w1pfr+ wn95his 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-qjk (q.ctd3v eyepiece of focal lengthq3kcv-t( d.jq 20 mm, adjusted for minimum 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 objectivq(-52dkyl k mye with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 2 dylymk5q-(k40.0 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 with,;crebp -2fln a focal length of 8.0 mm. What is the focal length of the eyepiece to g,l; npr2f-c beive 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 separatio7h: qan*3 vvfgn of 10-5 rad. If the wavelength of the lighth: vgfv 3na7q* 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 he5k r,l8o/4hfpp wx7.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of light used is 550 nm, wophh pr54e w,78lkxf /hat 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 eye changes from a diameter of0kmg +lmdp 9;ld k5qcxhzf .4. 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum anp+9m.hkx4 0.d5; c fkz dlglqmgle 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 mk4mkl,ckm( /v.u az9 h+r t,vorbit by the space shuttle. What angular resolution could this telescope achieve if the wavelength k94mtmm uz/chv ,vka, .(+rkl is 500 nm?

Correct Answer:    
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