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

1#

The length of time the shutter isl8 5c b0sig5gi open and the film is exposed in a camera is deterblisgc0i5 8 g5mined by 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 the film in a cambmw)a .c7o+thax p (px+l3 pz1era 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 by sli q9ebxi8taz g 2yg3o lp2ie1(,ding the lens for2xb2e e8tl3ggi( 9q1y z pa,ioward or backward with respect to the camera housing. If, with such a camera, 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 covea dfq1e:gp3f;cj, x5 ers the film with a field of view that corresponds approxim 3:; qfe,p ecxf1ja5dgately to that of normal vision is 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 lrf-rr ig)p77 4bjq60 :lchvf aike a telescope to magnify images is referred 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 viewgg5ne /w 5y8vm than that of the eye and through which objects appear smallerey58n/5 gw gmv 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 a camera different from the human5nb3mnufzs q/dyc / n:a7o5rg :m8e)i 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 refractiouo h4na3m ,yu0n of light by 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 clearly )yxeyg-5c ldqj 75t2lis

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 which an eye can see obj:nuzmg -sev;veoo 4a t3fi+in,3c)0 lects 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 longzprsdi)a2 0 6ohiai arz 9m.-7 from front to back, the person is likely to suf-h2zip9iom)r6a. z0 d7asia rfer from

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 usually be cor mld+((y6ck hyg-wt; arected 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 oy 3w2drynnsd/g(30foa h6 .r rise to a vision defonyd.(rs/frywg 0o3 2 6nh3daect that 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 ful;l r: l d1g7s1,bshyrom front to back, the person is likely to suffer frsg; 7l1l u:lyhs1rdb,om

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 usually be correv+,o/e e l1x 8bwkcr oll06a1jcted 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 to back, this gives rismzc8fr m14c g0e to a visio4cmcz gm80 fr1n defect that 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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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What type of lens is a mag3,gdiz;r(sn1po9xn tnifying 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 objective incsg fx0 glm6.e: ;p9c*j d*ynt an astronomicalctsxgf6m. npjgcl09 *; ey* :d telescope is

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 an ope.liv0awg +)fu)e2)vi/v t g iaque screen itv+)ii.gu ev)via2e gf0)lw/ s placed in front of the lower 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+g9dkn kpz3n 90ut*i e uniform sensitivity throughout the visible spectrum, in which of the following cases would you be able to best distinguish between two closelup3in kte+ *gzd90nk9y 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 magnificatipc:z.llq xy;+ 9oq0 wnon $m$. 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 exgw((g: 0l7 az lgea.ahpect to be able to see the greatest detail when using a microscopehwla 7z0 .(a: elg(gag?

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 sufferhsqs puu ojo 0n/.c-88 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 suffer kyzi k(f1om y7ajz:5ks -8is4from

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 referstzq l; i9.x4uhwepb+obz:+h ; to the ability to

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 radar yow/j0 w kinpx-7j.w .dish is doubled, what happens to its resolving power assuming that all other factors remain unchanged? Its resolvinxpiwwo7-/kjn. .0ywj g 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 lenskrxq9b;c72)azuhx- ivuj4 +7v,sx dl (in diopters) will allow this person to see dis 97lbvkax+7 )uxx4qujd h cvr-2iz; ,stant objects clearly?

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. What pool1lrvctf,v)b 9 zr22 wer of lens should be prescribed if the glav 2v92lzlr1)t,b cofrss is to be worn 1.00 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 whose lenses have power of -0.15 D. 5ar 8 bxwez z8.n7+ygu What is the person's far point if the glasses are very c 7+8 zg5.n8xbzewauyrlose 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 where th/ r qaz)dz1;xohdc*ebl n,1 a/e uncorrected near pointdo;1eha,x*d )/raq znb/lc z 1 is 75 cm?

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. r ccfy:(5 4rnhShe places reading glasses closec ncy5r4:hf(r to her eyes, and 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 held 25 cm from his eyes, if he o+y xqezr** hus,b3 pf:)/bvnwears glasseo )s*ufb3r hq vnpe:y*x+/,bz s 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 nea )dq6x n*qcwt1r point of 25 cm. What is the magnification of the lens for that person when their eyexwdqq)n c1*6ts 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 poi ggg1yt; ;b(aw)/kalynt of 25 cm. What is t/lg ayka;w) gt b;yg(1he magnification of the lens for that person when their eyes are focused at 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. t l 9b.cj*dfhqgt x),)n, a*cj What is the magnification if the image is viewed by a relaxed e ,jx)*th bt*, lfdnq9)caj cg.ye?

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 convergins/1+zkasq9 uk/b*y d x-2sbcvg lens of focal length 5.0 cm as a magnifying glass. What is the maximum k1x sq9vd kc2z syaus/bb-*/+ 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 66/d gi( xbvlj5.0 cm as a magnifying glass. What is the magnification if the perdixlb(6v6 /g json'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 cm, 4.0 cm, 8.0 cm, and 16je;5n kjg l,;m.0 cm. If you were to use any two of these lejg,; mk5le ;njnses to build a telescope, what 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. I(b6a pcgp3h:or(p-b);gu xds f you were to use any two of these lenses to build a telescope, what ix) p -;cgr(ap( o3gp:dbh6 bsus the lens separation 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 200 cm and nxr+0iq doqp7/ kk9q.its eyepiece has a focal len9+/ 7xkqriop0.q n dqkgth 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 telescope with a magnification of 10. flb;k,0 x,bfmr g :uj4If the telescope has a converging lens of focal length 50 cm, what is the focal length of thegkl:u,fb, mxrbj f4;0 eyepiece?

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 astronomicalmw/6i nrey4;o dtp: a: telescope with a magnification of 10. If the telescope has a converging lensr6dwe: toap;n4miy /: 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 telescope is limitetfm2i lp3/gu dwb)k 7(d to a length of 20 cm, what is the approximate focal length of the objectivet3(uibf wg7 )2mkd/ lp?

A. $16 \; cm$

B. $17 \; cm$

C. $18 \; cm$

D. $19 \; cm$

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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 focal length 1.z*jfli.u, )e4u.i2d0 n zwhq b4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is n*)e u 2.zq.iujlzif0b d,hw4placed 1.5 mm from the objective. How 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 leibpd9..ubnp 6 *y+iy pns of focal 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 pybii*p 9ypu bd6+.n.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 oft.jb /a+rw03kckj8d i 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separir.k8 / k0 +cjt3dabwjated by 40.0 cm, 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 basw:el27;5e-zd v9xv0i noun u vxw.a:rrel and an objective with a focal length of 8.0 mm. What is xun0voel 75uaiw;v9zs:ndv: 2-x.ewthe focal 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 f8,jb1u lsp d j2)u*vpOrion has an angular separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallesb j2judp*81l) ,suf pvt 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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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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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 aparfg)ug-w 5cgf 85v- etot. If the focal length of the objective is 4.0 cm and the wavelength of light used is 550 nm, what is the diameter of the obje f-gggu) to58-cw5e vfctive?

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(a)+:9b:(vnq elybp ium1o zo as the illumi1)abpe mlyq(o(z+i :9uo vb:nnation 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 b o,yky:g*m,izeen placed into Earth orbit by the space shuttle. What angular resolution cou ,zok, yymig:*ld this telescope achieve if 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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