Physics Unit25: Optical Instruments - 51fly国际课程 (51fly.win)

1#

The length of time the shutter is open and th qtyfsuchj1 4-f)/ v0re film is exposed in a camera is determined by rhs0)4fv - j1qyctfu/the

A. shutter speed.

B. f-stop.

C. focusing.

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 camera is ph v;c dpkf-+),3doa8 awzqd) determined by the

A. shutter speed.

B. f-stop.

C. focusing.

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a single-lens reflex ca+- -ezu 2b ;xihv6z lxpp)ih:qmera the lens-film distance may be varied by sliding the lens forward or backward with respect tovi xq-zbzhue):pxl6 2;+pi- h 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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

4#

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 field of view that corresvisja//e 2ndk6v j31 rponds approximately to that ofjn2 jke ia3svv/r/1 6d normal vision is referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 magnqgps)(o,+a rkify images is referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 o k:4bw) 2vsr o.v;qbajs:*ydpf view than that of the eye and through which objecd*byap):;2vs.wrk vob4 j :sq ts appear smaller is referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 h+ vauq8gy :lv.uman 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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principal refraction of light by the eyet-v ,ney n**qc.)xv(6g ,dmvayjg (rt occurs at the

A. cornea.

B. lens.

C. retina.

D. iris.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The closest distance at lwvz pr2ev*i./sq t*0which an eye can see objects clearly is

A. the near point.

B. the far point.

C. nearsightedness.

D. farsightedness.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The farthest distance at which an eydu.9s1cxfiwv ;d c ,r6e can see objects clearly is

A. the near point.

B. the far point.

C. nearsightedness.

D. farsightedness.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 frgb1y. 44cdbyg lr7 h)ooz q**pom front to back, the person is likely to suffe1rpyq4*yzb. gcolb gdoh4*7)r from

A. spherical aberration.

B. nearsightedness.

C. farsightedness.

D. astigmatism.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Nearsightedness can usuafcitkohk0p m/8n0i2 1 lly be corrected with

A. converging lenses.

B. diverging lenses.

C. achromatic lenses.

D. cylindrical lenses.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the human eyeball isa ,enyykxx9e9q6 x54x too long from front to back, this gives rise to a vision defect that can be k9xe,4 yqenx6xa yx95 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).

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If a person's eyebalauvcxn(3ztxhmfh1d )h9ft d4x /80 j; l is too short from front to back, the person is likely to sufferhh/1 z; d9ndjhac0mt48xu f 3) txxvf( from

A. astigmatism.

B. spherical aberration.

C. farsightedness.

D. nearsightedness.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Farsightedness can usually be corrected,27 q6dxur vyy h20 homlzta)- with

A. cylindrical lenses.

B. achromatic lenses.

C. diverging lenses.

D. converging lenses.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 rise to a +un9-t4i u/b d/ bpmnjvision defect that can be correctebb4nmjunp /i tu /9-+dd 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).

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What type of lens is a 2yw43tgm)u x 7j qv3 +ogyj0+)ztmy)iwgemz( magnifying glass?

A. converging

B. diverging

C. spherical

D. cylindrical

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An important reason for using y;/i1jn5jx j mj9ryfc2 n5 m1ya very large diameter objective in an astronomical telescynjyn jr/cj5m2m5;f1i1y x j9 ope 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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Consider the image fomxsdqpk 4 lqmi)*:1,pabol2; s r.q,mwj zs .-rmed by a refracting telescope. Suppose an opaque screen is placed in fm,s-4ojma;m:dwskq i z2.lq)psr l1*bxq.p ,ront 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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Assuming the film used has unifou j; hsg 5ufdc4u o/nkbil 65;qi,p2b4rm sensitivity throughout the visible spectrum, in which of the folful /2;cu hu56gdk q b,o4s;45nip bijlowing 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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A refracting telescope hya +u)hc3qft8uu-) h3z: w+igzg /k ofas a magnification $m$. 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. $m/4$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

With what color light would you expect tounz-)3ke - xzl be able to see the greatest detail when using a micr zx- -)eu3znlkoscope?

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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Spherical lenses suffer frotvtk--6/ hbw fl7 cd8dm

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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Spherical mirrors suffm de /n*bb5y(mer 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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The resolving power of a microscope refers r4u m m6xf9 8ith0qybrw-1vi7 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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the diameter of a radar dish is doubled, what happens to its resolving powerdg f-g1g ;zq;d assuming that all other factors remain unchanged? Its resz1dd-;qg g g;folving power

A. quadruples.

B. doubles.

C. halves.

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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 h/5estk5byh ) cm. What lens (in diopters) will allow this ps55y/et ) bkhherson to see distant objects clearly?

A. +5.6 D

B. -5.6 D

C. +0.056 D

D. -0.056 D

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 pl7uslf *w- c)or5/qqa ower of lens should be prescribed if the gla7 */) 5lslqqo-wc rfuass 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. $-0.0145 \; D$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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.cf6ixh ()rtm- 15 D. What is the person's far point if the glasses are very t(r fci)hm6 -xclose to the eyes?

A. $1.5 \; m$

B. $3.3 \; m$

C. $6.0 \; m$

D. $6.7 \; m$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 the ql7)n nxlg)b .eo4fd2nt 7tu ;b/3pcsuncorrected near point is 7edxc.3uf;lt nlo )p/n 2t 7bn b7)4sgq5 cm?

A. +2.7 D

B. -2.7 D

C. +5.3 D

D. -5.3 D

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 :7xfqg nvj( k-cm. She places reading glasses close to her eyes,gqf nk 7:x-vj( 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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

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 h2 o9l;fpnt 1zvct/(arkc1i h/ e wears glasses(a1/t 9r nkptlh z/oc f1c2;iv of
+3.33 diopters. What is this person's near point?

A. $4.2 \; cm$

B. $25 \; cm$

C. $31 \; cm$

D. $1.5 \; m$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 pm;gc(jlsk5;2* 6fy/p xw/b 2ttawtmp oint of 25 cm. What is the magn 2;wl5j2f cy( ptxm// gms6t;ptbk *waification 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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

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 of 25ril 2el6g 6s*xlv;d,cr p8k; q cm. What is the magnificaexl , c;6pqr*rg;6skd8 2lvlition 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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 cmiq*we n t.f:afv+1 7fw. What is the magnification if the imaff 7:a wf vw1q.i+nte*ge is viewed by a relaxed eye?

A. 1.6

B. 2.6

C. 3.6

D. 4.6

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

36#

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 a madoltiu9d0e.bg lv , rm7d*;y3gnifying glass. What is the maximum possmu3l*7bor td .,d0y; ligdv e9ible magnification?

A. 4.0

B. 5.0

C. 6.0

D. 7.0

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 a magnifying dqrz3bl,mq80ijj ; n n((p zf0glass. What is the magnification if the person's eye is relaxed?(j (8n b0qri3npzjq l;d,0zmf

A. 4.0

B. 5.0

C. 6.0

D. 7.0

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 cmu4kq,0j*b(zb)akleo7 sw6 -jx na cx 1, and 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum magnification you could b0(uxaw)*1e ,6qj-sjzk7bokna x4lc achieve?

A. 2.0

B. 4.0

C. 6.0

D. 8.0

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

39#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

You have available lenses of foca--4yb9isq6tgzw 8vm k l lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to use 9 wq i s6-yvg-bk8tm4zany two of these lenses to build a telescope, what is the lens separation for the maximum magnification telescope?

A. $10.0 \; cm$

B. $12.0 \; cm$

C. $18.0 \; cm$

D. $24.0 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

40#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The objective of a telescj 2b*.tnwdals66 ms; 807rf, xeffiyhope has a focal length of 200 cm and its eyepiece has a focal length osaxlf60rdjnf;h76bi.2y e ts,fw8*m f
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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

41#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A student constructs an astronomicay/u n9lye xhrzyip+c. g;m 49+l telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the xliypr+ n;+uezg h/.y9my4 c9focal length of the eyepiece?

A. $2.5 \; cm$

B. $5.0 \; cm$

C. $10 \; cm$

D. $25 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

42#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A student constructs an astronomical telescope wit z+o*vcc :p;eeh a magnification of 10. If the telescope hasez+;pcco* :ev 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. $75 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

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 t561qj *pu;r 2rdst 4i:me.vxn;gnj stelescope is limited to a length of 20 cm, what is the appr 1m5u.tvj*g6 epnxn:dt s;rs4i2; rjqoximate focal length of the objective?

A. $16 \; cm$

B. $17 \; cm$

C. $18 \; cm$

D. $19 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

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 1.4 mm and an eyepiece of l)c h*fx(p3 xo-c)jiw10a a zsfocal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the o os 3a)(w0ixcp*)-za1h cljfxbjective. How far apart are the lenses?

A. $20 \; mm$

B. $21 \; mm$

C. $23 \; mm$

D. $41 \; mm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

45#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A microscope has an r3 l-q fq(jf,kobjective lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrai (fqqk ,ljfr3-n. A blood sample is placed 1.5 mm from the objective. What is the overall magnification?

A. 18

B. 37

C. 180

D. 370

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 d-zthpmaz wx5i +)- 8afocal 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 the total magnif ad5+px-th-w)mzz8ai ication?

A. 27.8

B. 55.6

C. 278

D. 556

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

47#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscope has a 188c ia5rt5 f+ee-cm barrel and an objective with a focal length of 8.0 mm. What is the focal length of the eyepiftecae r+5 8i5ece to give a total magnification of 240?

A. $0.13 \; cm$

B. $1.5 \; cm$

C. $1.9 \; cm$

D. $2.3 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

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 angular x.zi liodrntv+ucfy 2b,v +s l7f)yz57 *5ff)separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallest apertuli2.,y7ctdl x+5 ysfrvfof* f75zu) +n)z vibre (diameter) telescope that can just resolve the two stars?

A. $0.50 \; cm$

B. $0.61 \; cm$

C. $5.0 \; cm$

D. $6.1 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

49#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscope is designedhj ee evdh3 (sf+d)45u 7vyp2x to resolve objects which are 0.010 mm apart. If the focal length of) ey 7+25hvs uf3ev(dxed jh4p the objective is 4.0 cm and the wavelength of light used is 550 nm, what is the diameter of the objective?

A. $0.27 \; mm$

B. $0.54 \; mm$

C. $2.7 \; mm$

D. $5.4 \; mm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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

标记此题

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 thes.kl(5klyu(ub/w f3gw t2 1x u illumination is increased. By what factor does the minimum angle of resolution cks2l(wwyt5xulgfu( /b. 1k u3hange?

A. 0.43

B. 0.65

C. 2.0

D. 2.3

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

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 placed into Earth orbieskeo 1zghl.+jv/zjh93l1v3mr nl* 0 t by the space shuttle. What angular resolutigeosz +rl0hnjz./ 3kh1e 91ll vmv*j3on could 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. $6.8 \times 10^{-7} \; rad$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

账号		自动登录	找回密码
密码			立即注册

网页聊天 (离线可收发)

加微信咨询 (申请一对一课程辅导，加本站学习交流群）

电话咨询：

发帖咨询：

查看帮助：

未使用图片

本次作答已使用

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51