Physics Unit25: Optical Instruments - 无忧得胜-网上国际课程 (5edu.win)

1#

The length of time the shutter is open and the film is exposed in a cameraj4w*al 1:mvef a2/tuy is determined by yu*:vt4ew a1f/lj2m a the

A. shutter speed.

B. f-stop.

C. focusing.

D. none of the given answers

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The amount of light reaching th sedp,)i)c4oc+(rv:j /ow. -tteox mhe film in a camera is determined by the

A. shutter speed.

B. f-stop.

C. focusing.

D. none of the given answers

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a single-lens reflex camera the lens-film distance may be varied by1 fbee49k cq,mfq /z6j sliding the lens forward or backward with respect to the camera housing. If, with such a cameq4febc/ zk,mfje69 q 1ra, a fuzzy picture is obtained, this means that

A. the lens was too far from the film.

B. the lens was too close to the film.

C. too much light was incident on the film.

D. too little light was incident on the film.

E. none of the given answers

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A camera lens that covers the film w2 yicvxgg9. ,zith a field of view that corresponds approximately to that of normal vision yzx9.iv 2g ,cgis referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A camera lens that acts like a telescope to magnify images is refxt7nt2-h) ng4x 4 dshxerred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A camera lens that covers the film with a wider field of view than that of a3 co1we:c) rvanvauygip4(g6i-q8 6the eye and through which objee361 o :q)p yig4 av(iwr8uncga-6c avcts appear smaller is referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In which of the following ways is m1oyx7mvn 0g.s pe5*w a camera different from the human eye?

A. The camera always forms an inverted image, the eye does not.

B. The camera always forms a real image, the eye does not.

C. The camera utilizes a fixed focal length lens, the eye does not.

D. For the camera, the image magnification is greater than one, but for the eye the magnification is less than one.

E. A camera cannot focus on objects at infinity but the eye can.

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principal refraction of light by 8szuc .5/zocn the eye occurs at the

A. cornea.

B. lens.

C. retina.

D. iris.

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The closest distance at which an eye can see objects clearlf2sp2jak,dq/ y is

A. the near point.

B. the far point.

C. nearsightedness.

D. farsightedness.

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The farthest distance at wh tuduq-14yk14fh*, fc alaqg)ich an eye can see objects clearly is

A. the near point.

B. the far point.

C. nearsightedness.

D. farsightedness.

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If a person's eyeball is too long from front to back, the og05hd :mngo8 person is likely to suffer ono5m0g g8 :hdfrom

A. spherical aberration.

B. nearsightedness.

C. farsightedness.

D. astigmatism.

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Nearsightedness can usuall k) ye:smmake:n;z 99dy be corrected with

A. converging lenses.

B. diverging lenses.

C. achromatic lenses.

D. cylindrical lenses.

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the human eyeball is too long from front to back, this gives ris/p 8 ,iyvc6k8nhj tbe+e to a vision defect tph/jv8t 8k,y6icn +ebhat can be corrected by using

A. convex meniscus eyeglasses.

B. concave meniscus eyeglasses.

C. cylindrical eyeglasses.

D. contact lenses, but no ordinary lenses.

E. shaded glasses (i.e., something that will cause the iris to dilate more).

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If a person's eyeball is too short from front t2bo sjwp-9mv2a sjn o4m*y5b,o back, the person is likely to suffer frob 9y2m*j5nbsjam2, s4p o-wvom

A. astigmatism.

B. spherical aberration.

C. farsightedness.

D. nearsightedness.

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Farsightedness can usuallrz * i:9u9jf/a-jlmir y be corrected with

A. cylindrical lenses.

B. achromatic lenses.

C. diverging lenses.

D. converging lenses.

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the human eyeball is too short from front txtai bdpqde+v*q(n/15fe*1 b o back, this gives rise to a vision defect that can be copq *bea*/( q 5b1evd1nidtf+xrrected by using

A. convex meniscus eyeglasses.

B. concave meniscus eyeglasses.

C. cylindrical eyeglasses.

D. contact lenses, but no ordinary lenses.

E. shaded glasses (i.e., something that will cause the iris to dilate more).

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What type of lens is a magnifygn1gpahlkf ( x5g6m6 +ing glass?

A. converging

B. diverging

C. spherical

D. cylindrical

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An important reason for using a very large diameter ob-9 1cxcverx y6jective in an astronomical telescope c16xcvxr y- e9is

A. to increase the magnification.

B. to increase the resolution.

C. to form a virtual image, which is easier to look at.

D. to increase the width of the field of view.

E. to increase the depth of the field of view.

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19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Consider the image formed by a refracting telescope. Suppose ;vzbk23 x7 e ffkr9c*76xxth l)1ihxsan opaque screen is placed in front of the lower2xzr fv9xsc xtf 7lbe3 7hx* 1ihk6k;) half of the objective lens. What effect will this have?

A. The top half of the image will be blacked out.

B. The lower half of the image will be blacked out.

C. The entire image will be blacked out, since the entire lens is needed to form an image.

D. The image will appear as it would if the objective were not blocked, but it will be dimmer.

E. There will be no noticeable difference in the appearance of the image with the objective partially blocked or not.

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20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Assuming the film used has uniff b*ya6 r+2liu*cqvb3orm sensitivity throughout the visible spectrum, in which of the fob*vy6rqcf iul2 ba+*3 llowing 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.)

A. use a large lens and blue light

B. use a large lens and red light

C. use a small lens and blue light

D. use a small lens and red light

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21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A refracting telescope has a magnificativxf59s vd*26xnp 6wv .)dft 7kktq; xfon $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

A. $4 \; m$

B. $2 \; m$

C. $m/2$

D. $m/4$

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22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

With what color light would you expect to be able to see the greatest detailj 72sjo.sk nv j:e5nr1,g,mld when using a microsjosjvje,ns, mn 27 rd.gl: 15kcope?

A. red, because of its long wavelength

B. yellow, because of its right wavelength

C. blue, because of its shorter wavelength

D. Color does not matter.

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23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Spherical lenses suffer) qn7r rt3*1 s+vszqjx from

A. both spherical and chromatic aberration.

B. spherical aberration, but not chromatic aberration.

C. chromatic aberration, but not spherical aberration.

D. neither spherical nor chromatic aberration.

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24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Spherical mirrors su:589xk)iw:lr.bez)ioxwq 3twl .gm uffer from

A. both spherical and chromatic aberration.

B. spherical aberration, but not chromatic aberration.

C. chromatic aberration, but not spherical aberration.

D. neither spherical nor chromatic aberration.

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25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The resolving power of a microscope refers to the ability gz4kag th7on1r t(/7rto

A. distinguish objects of different colors.

B. form clear images of two points that are very close together.

C. form a very large image.

D. form a very bright image.

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26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the diameter of a radxl2r+;66f w jrqp cr l)sm.da;ar dish is doubled, what happens to its resolving power assuming that all otherw acj6; 6+).;rf2l dxprlqrms factors remain unchanged? Its resolving power

A. quadruples.

B. doubles.

C. halves.

D. is reduced to one-quarter its original value.

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27#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A near-sighted person has a far point of 18 cm. What lens (in diopte:pk6,y , tnn-od)hh9yc a(eqdrs) will allow this person to see distant objects clearl -akh,e9o (, yqydcn:n)hdt6py?

A. +5.6 D

B. -5.6 D

C. +0.056 D

D. -0.056 D

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28#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person cannot see clearly objects more than 70.0 cm away. 9) :zffz ) twmet,ubw9What power of lens should be prescribed if the glass is to be worn 1.00w9b ft)9tw:,u em )fzz cm in front of the eye?

A. $1.45 \; D$

B. $-1.45 \; D$

C. $0.0145 \; D$

D. $-0.0145 \; D$

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29#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A nearsighted person wears glasses wnwgb ku.+x 6x4hose lenses have power of -0.15 D. What is the person's far point if the glasses are +bxk.4 6ugwxnvery close to the eyes?

A. $1.5 \; m$

B. $3.3 \; m$

C. $6.0 \; m$

D. $6.7 \; m$

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30#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What power lens is needed to correct for farsightedness wh al9o2, yglk*pere the uncorrected near point is 75 ,y* all9k2g opcm?

A. +2.7 D

B. -2.7 D

C. +5.3 D

D. -5.3 D

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31#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The near point of a farsighted person is 100 cm. Shwiijau d;kwff hu7/q422q1 y-e places reading glasses close to her eyes, andiau17 w/-hf2;jqki f2duw4qy with them she can comfortably read a newspaper at a distance of 25 cm. What lens power is required?

A. +2.5 D

B. +3.0 D

C. +3.2 D

D. -2.0 D

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32#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A farsighted person can read a newspaper h5nbk7f p(/n pneld 25 cm from his eyes, if he wears glassesf7n 5nnk/(pb p of
+3.33 diopters. What is this person's near point?

A. $4.2 \; cm$

B. $25 \; cm$

C. $31 \; cm$

D. $1.5 \; m$

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33#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A magnifying lens has a focal length of 10 cm. A person has a near point of tb3 pni;4k/f jj6* -8whqxgns25 cm. What is the magnific6p4n * 8bf/;ijg w3hkqn- stjxation of the lens for that person when their eyes are focused at infinity?

A. 1.5

B. 2.5

C. 3.5

D. 4.5

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34#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A magnifying lens has a focal length of 10 cm. A person has a near point a:1bcq,8 w al)0z ctg8xf no1cof 25 cm. What is the magnification of the lens for that person when their eyes are focused at qa: )la8tbco,w z18fgxnc0c1 their near point?

A. 1.5

B. 2.5

C. 3.5

D. 4.5

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35#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A magnifying glass has a focal length of 7.0 cm. What is e8 4s;e2+bemrca0v ctthe magnification if the image is viewed by a rv2sb;4ca cm+e8e tre0 elaxed eye?

A. 1.6

B. 2.6

C. 3.6

D. 4.6

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36#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person uses a converging lens of focaloq-wq aqe6v h:c;vu.; length 5.0 cm as a magnifying glass. What is the maxv6qq.;; v:hwcauoq e-imum possible magnification?

A. 4.0

B. 5.0

C. 6.0

D. 7.0

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37#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person uses a converging lens of focal length 5.0 cm as aejzjxgd-(,+ g magnifying glass. What is zj-jde(x+gg , the magnification if the person's eye is relaxed?

A. 4.0

B. 5.0

C. 6.0

D. 7.0

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38#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

You have available lenses of focal lengths 2.0 gwrf/q/5rw;v6*b khkqh-aov dg84 v2 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, wha2 f/4q5gkrvo8 6dg-w/qr;vh * akvwbht is the maximum magnification you could achieve?

A. 2.0

B. 4.0

C. 6.0

D. 8.0

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39#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. kpss8z;mub 5dab- 53v:moak. If you were to use any two of these lenses to build a telescope, what is the lens sepabm;pd8a okub5 5:-3szs av.km ration for the maximum magnification telescope?

A. $10.0 \; cm$

B. $12.0 \; cm$

C. $18.0 \; cm$

D. $24.0 \; cm$

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40#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The objective of a telescope has a focal length of 4 mupxqpj2a te26,2y,wncgo +200 cm and its eyepiece has a focalyq p,+moeu42a,gjtn22p x6wc length of
1.1 cm. What is the magnification of this telescope when viewing an object at infinity?

A. 20

B. 0.0050

C. 200

D. none of the given answers

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41#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A student constructs an astronomical telesc:n 4asfhz 9idgg (/xp9ope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the focal length of the esp /4agdf(z:ig xh9n 9yepiece?

A. $2.5 \; cm$

B. $5.0 \; cm$

C. $10 \; cm$

D. $25 \; cm$

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42#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A student constructs an astronomical telescope with a magnification of 10o06 da( d6,dq/w4 yy umql0lwz. If the telescopedlwzq4,ay y0 ddu/6qw( m0 o6l has a converging lens of focal length 50 cm, what is the resulting length of the telescope?

A. $53 \; cm$

B. $55 \; cm$

C. $60 \; cm$

D. $75 \; cm$

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43#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person is designing a 10X telescope. If the telescop:ov9ffphyp c0 fn420 +h mupp2e is limited to a length of 20 cm, what is the approximate focal length of the objecti +p0comp2uy :f2vh p049nffphve?

A. $16 \; cm$

B. $17 \; cm$

C. $18 \; cm$

D. $19 \; cm$

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教师可以抽题组卷或一键复制本试卷，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

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44#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A microscope has an objective lens of foca0wruep ys3kd + bn:(/2omdiu0l length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. Howo yd bn/s:0wr(0d 3pie u2+mku far apart are the lenses?

A. $20 \; mm$

B. $21 \; mm$

C. $23 \; mm$

D. $41 \; mm$

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45#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A microscope has an objective lens of focal length 1.4 mm an9-ksp4:g un1 ubvaya qk r,:r5d an eyepiece of focal lengthr1,a :4 :-r ua5qpby9g skkunv 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the overall magnification?

A. 18

B. 37

C. 180

D. 370

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46#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscope has an objective with a focal length of 3.00 78s)0bh.e abbah d6ur mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40.0 bb)76 e8ba0hdsa r.u hcm, what is the total magnification?

A. 27.8

B. 55.6

C. 278

D. 556

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47#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscope has a 18-cm bngv3acoo :m18 n/i ni b8lta94arrel and an objective with a focal length of 8.0 mm. What is the focalag3 moi/n1oc:8av t89nni4 lb length of the eyepiece to give a total magnification of 240?

A. $0.13 \; cm$

B. $1.5 \; cm$

C. $1.9 \; cm$

D. $2.3 \; cm$

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48#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A binary star system in the constellation Orion has an angularvt; tey;igp;y 5 *crz) separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, wh tgry*ye;ic )p t5v;z;at is the smallest aperture (diameter) telescope that can just resolve the two stars?

A. $0.50 \; cm$

B. $0.61 \; cm$

C. $5.0 \; cm$

D. $6.1 \; cm$

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49#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscope is designed to resolve objects which are 0.010 mm apart. f4yapm 3u(ern. /)jlz If the focal length of the objective is 4.0 cm and the wavelength of light used is 550 nm, what iyl z npam4uf)j./r3( es the diameter of the objective?

A. $0.27 \; mm$

B. $0.54 \; mm$

C. $2.7 \; mm$

D. $5.4 \; mm$

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50#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as o pue-1 +ua/ofjg/9pethe illo+o/f9-ua j1e/guep pumination is increased. By what factor does the minimum angle of resolution change?

A. 0.43

B. 0.65

C. 2.0

D. 2.3

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51#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The 2.4-m reflecting Hubble Space Telescope has been placer4vldcg+t rj:8zc. r0d into Earth orbit by the space shuttle. What angular resolution could this telescope achieve i:t0zd8r+.v c4r l gjrcf the wavelength is 500 nm?

A. $2.5 \times 10^{-7} \; rad$

B. $3.6 \times 10^{-7} \; rad$

C. $5.7 \times 10^{-7} \; rad$

D. $6.8 \times 10^{-7} \; rad$

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