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

1#

The length of time the shuttkjlq(jn/;u5r*k dfshc6 y5/8u gy3u h er is open and the film is exposed in a camera is determined by th 5cf/u hkuryny;uk/sjj8 65qld*g(h 3 e

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无忧得胜-网上国际课程 (https://5edu.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

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 dlqc8v99ay ntsys); .z etermined 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无忧得胜-网上国际课程 (https://5edu.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 camera p1tpa+ o;4 3/vl,ght csy+pamthe lens-film distance may be varied by sliding the lens forward or backwa, p/ +l3cvptsyh1+ota g;m4p ard 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

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

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 lhokcrx/12;5y 3vwekq6q mw4a field of view that corresponds approximaw/c254y 1k 3lxhk qqr me6;wovtely to that of 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 telescopebh(dagy2nxys;dm 2 +g z2 gjdg5gv47 . to magnify 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 8hkqe 1+ l4,rsccrac9a wider field of view than that of the eye and through whiscr4qc lr,9ah8eck1+ ch objects 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

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.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

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 camehwxdyb,1opso3u .f (2ra 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.

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

8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principal refraction of li;p 3 tsjbdu -*dk*0vz2a) mt ;ceevyb*ght by the eye 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 which an eye can see *rrv 3qn;chw+e/ifov+h3t/a 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 eye can see objects *pd/*pwq xnm a gub7.(an8c x0clearly 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 f (i,.6t pxw:p k4-zssnu; ,vv-tcigvurom front to back, the person is likely to suffer frov zisnt i;.-g,6(tu 4wvscp: x-k,vupm

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 usually be correctwedm2f1 ezr;z6 u l;5qb5y3p ned 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 is too long from front to backa nlh7,nw7 o jj.*/mbu,t7 qdzefi:/l, this gives rise to a vision defect that can be corrected byz77,thq7jiwbn.e,*d/lfo am l / ju:n 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 eyeball isxxbkv4)zv/ocp6k )x 6j y)i8w too short from front to back, the person is likely to suffer frc 6kix w))xz4)6py/ kbvj8 xovom

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

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 correctedex-h/ 1/+ns ciuki w+x 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 gio4yjtnrtk1( 8 ves rise to a vision defect that can be correctott(1jynkr 4 8ed 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 magni8f0m44ftd-gcbs. o u+gwp x; aqfp8:lfying 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 a vegeqe *(szm g89(wl t65gu ev8hry large diameter objective in an astronomical telescol5h((eg *e uq8veggt6wmz9s8pe 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 formed by a refracting telescope,kc*d b12vatq97s0oes wg. 5 ovsodf 1. Suppose an opaque screen is placed in front of the lower half of the objective lens. * 0 fw9.ov scdkv2a51 ode1s sbgt,oq7What 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

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.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

20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Assuming the film used has uniform sensitivity throughout the visible s(u3 rzkocn5nr*r a d9fb 4q+f1pectrum, in which of the following cases would you be able to best distinguish between two closely spaced stars? (The lens referred to is the objek *c1qonrr3 fba4f n5z+r(ud9ctive 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

标记此题

21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A refracting telescopk 8/; nchmjd+(d0wb4b,d 1 sxmir5 jcme has 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 yumgy*: bl2jc(ou expect to be able to see the greatest detail when usi g2uy l(jbc:m*ng a microscope?

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

标记此题

23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Spherical lenses suffer from n4vk0+tfibithq8ut0v* 1p q;

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 suff3n5:nki f.z;p*labaw er 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 to 6mujqpcepv2l9hp i;) 8 0tg o-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 9lb i9yz d6bzk5wcj13radar dish is doubled, what happens to its resolving power assuming that all other factor1b z39ckw59 6 zbdjliys remain unchanged? Its resolving 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

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.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

27#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A near-sighted person has a far poin ,i.zt0r8ew: 0qojp*umvc q0bt of 18 cm. What lens (in diopters) will allow this person to see distant*w tbp0 0co,qv:ie.qru0 8zmj 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 co pn/b9;)cj72fvbw tgm away. What power of lens showobc9g npjt v;b/2f) 7uld be prescribed if the glass 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

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.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

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 r+l5yg;-xgtu,wm-3)er68sh kr4gp a ) ljomdpower of -0.15 D. What is the person's fa -)dg5ople a8w) r,j;gktsx4u3lhmr6gyr+m-r point if the glasses are very close 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 corrw 9(yk/myh5wzmw ohl; 3noq1z:p xe9 2ect for farsightedness where the uncorrected near point is 75 cm?;n h lm 9yp ww13zmw:ozo5qk/h92 yx(e

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 cm. She places reading glasser l9tf+.+u:/a m5upt5cvtecy s close to h/5+5m t.lc+v ypctt9 :a rfueuer 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

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无忧得胜-网上国际课程 (https://5edu.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 froji.xhwo m.843tpixwxm (*1e om his eyes, if he wears glasses o (1xwhp3 i.tjmm*.i48x o owexf
+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 kfgve / wc9-cb(hxx4(cm. A person has a near point of 25 cm. What is the magnification of the lens fo cc-fxxk4whg ((evb/9 r 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无忧得胜-网上国际课程 (https://5edu.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 perso z yq-v)xtb4 ;pxcq+-xn has a near point of 25 cm. What is the magnification of the lens for pxq4 xcyvqtz+ --;x)b 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

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.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

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 noh0:he8)o;(xt;4qq p z7lgrpzlir5. What is the magnification if the imagql5;h 4ooh8gql ( :i)r ;p0ezpnz 7rxte 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(rx5wl oej/ +z cm as a magnifying glass. What is the maximum prl ow/5zj( xe+ossible 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;eqcu hmy+. 89; enhguxrg54t of focal length 5.0 cm as a magnifying glass. What is the magnification if the p+g thmcx q u4gye.uh;;er5 n89erson's eye is relaxed?

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 cm,m v-xkbxfki ako38*/ . and 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum magnificaf3i.x- k m*v/8bkkxoation you could 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

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 focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. hyp(*hab,dlvu*v,md+yo; ba fn 4yq o9y)5n0 If you were to use any two of these lenses to build a telescope, what is the lens separation for the maximum magnification teles *(o4ohq, 0y ha nmvaln,d bb)y+yy*d5pu9f;v cope?

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

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.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

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 aa7h l8tb 6a pjlr9m9y6nd its eyepiece has a focal length obljh9p7 ar866lay9m tf
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 astron ws 4+-u8 z7xrgcmzky:omical telescope with a magnification of 10. If the telescope has a convergi-+uygx 7z4z rsk: 8mwcng lens of focal length 50 cm, what is the focal 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

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 with 7d 55nw:emmmo0hit sya a 1 mpr3kb,-sp.) .uva magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resus55m k7. t0u .3ypad)o1miew pnmha s-rv,mb:lting 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

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 telescope is limiteda 18birq/yz5c to a length of 20 cm, what iy1azr8 qi5c b/s the approximate 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

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 eyepie1 35x hbo77/ e6 nogwmxzqkc*;iqe)uoce of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the obje7 5mgeixn oze7xwbuo)1hc q*; o /63kqctive. 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无忧得胜-网上国际课程 (https://5edu.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 objective lens ofs:m d m.wmvr.1 focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood samplemv w:ds.1rm. m 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 focaly7mb ;pbpj;3 s 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 p;p37mjbby s ;the total magnification?

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 18-cm barrel and an objective e;2;hexne. svwith a focal length of 8.0 mm. What is.h v ;eex;e2ns the 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. $2.3 \; cm$

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

48#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A binary star system in the constellatioui ,uo +l*cf lenv;e-8n Orion has an angular separation of 10-5 rad. If the wavelength of the ligh8u , l-;ueovci*n +flet from the system is 500 nm, what 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. $6.1 \; cm$

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

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.ssde/;ys:tht7vqf.st) njv(k1 zh)u bh j 85)010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of light used is 550 nm, what is the diameter ofj)sb .(jhk7 ntvh)tzseqh s vuy5sf :18)/;dt 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

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 diameter07 y uwfp7+;n4skr6yy zlf6m g of 3.5 mm to 1.5 mm as the illumination is increasez7;gr mp un 6 lf4ks706y+wfyyd. By what factor does the minimum angle of resolution change?

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 Hub8dybxn/q3/ pt* *nx) n6matrlble Space Telescope has been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve if the wavelength isdm6/* /nx plan r*)xn38t ytqb 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：

联系管理员：

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