Physics Unit27: Early Quantum Theory and Models of the Atom

1#

In a pair of accelerating plates, such as found inside a CRT, the electrons a 8/18k n+odk. fyag/tleoz7upre emitt7 af1y+epkndo ku/ .8g t8l/ozed

A. from the cathode which is positive, toward the anode which is positive.

B. from the cathode which is negative, toward the anode which is positive.

C. from the anode which is positive, toward the cathode which is negative.

D. from the anode which is negative, toward the cathode which is positive.

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A blackbody is an ideal s wi(l74e *b5 hwfzyme9ystem that

A. absorbs 100% of the light incident upon it, but cannot emit light of its own (i.e., a "black" body).

B. emits 100% of the light it generates, but cannot absorb radiation of its own.

C. either absorbs 100% of the light incident upon it, or emits 100% of the radiation it generates.

D. absorbs 50% of the light incident upon it, and emits 50% of the radiation it generates.

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which color in the visible spectrum is associated with the lowest temperaturspi y6, +nq4-rgfdquh8pc1p2e?

A. blue

B. green

C. orange

D. red

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Planck's constant

A. sets an upper limit to the amount of energy that can be absorbed or emitted.

B. sets a lower limit to the amount of energy that can be absorbed or emitted.

C. relates mass to energy.

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

5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The ratio of energy to frequencz,sj f tt4; )k)sfjvij.me*b -y for a given photon gives

A. its amplitude.

B. its velocity.

C. Planck's constant.

D. its work function.

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

The fundamental SI uni 5f-1orfxw:cake4 f .gts of Planck's constant are

A. $kg \cdot m/s$.

B. $kg \cdot m^{2}/s$.

C. $kg \cdot m/s^2$.

D. $kg \cdot m^{2}/s^2$.

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

Planck's constant has a value ofdy hv 9w;od89u

A. $1.055 \times 10^{-34} \; J \cdot s$.

B. $6.626 \times 10^{-34} \; J \cdot s$.

C. $8.85 \times 10^{-12} \; J \cdot s$.

D. $8.988 \times 10^{9} \; J \cdot s$.

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

A photon is a particle thav9znykh 2)k* j51vj dxt

A. has zero electric charge.

B. has zero electric field associated with it.

C. cannot travel in a vacuum.

D. has a velocity in a vacuum that varies with the photon frequency.

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

Which of the following is an accuratt1sm ux 1oo;-e-1:z jqwpzq5r e statement?

A. In vacuum, ultraviolet photons travel faster than infrared photons.

B. Photons can have positive or negative charge.

C. An ultraviolet photon has more energy than an infrared photon.

D. Photons do not have momentum (i.e., they cannot exert pressure on things).

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

What is a photon?

A. an electron in an excited state

B. a small packet of electromagnetic energy that has particle-like properties

C. one form of a nucleon, one of the particles that makes up the nucleus

D. an electron that has been made electrically neutral

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The energy of a photon dependsh27*,:pi -xzcsr v xuu on

A. its amplitude.

B. its velocity.

C. its frequency.

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

12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the wavelength of a photon is halved, by what factor does its energy changsku6kg 6*gan2gsh:n * e?

A. 4

B. 2

C. 1/4

D. 1/2

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which color of light has the lowest energy pnycrmx zqlk .l.a:3/) hotons?

A. red

B. yellow

C. green

D. blue

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

The photoelectric effect is explainable assxz.b(wo m;i+1b+jvy 9oy9yleh+lfg d 30;ak auming

A. that light has a wave nature.

B. that light has a particle nature.

C. that light has a wave nature and a particle nature.

D. none of the above

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In order for a photon to ejeu 5px *fao2qwppabo: b::tl.9g 2pv o5ct an electron from a metal's surface in the photoelectric effect, the .o u 5ft p92qpbbvalw*g::5apxoop:2photon's

A. frequency must be greater than a certain minimum value.

B. speed must be greater than a certain minimum value.

C. wavelength must be greater than a certain minimum value.

D. momentum must be zero.

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The kinetic energy of the photoelectron depenarde. 7d .iu(gds on which of the following?

A. intensity of light

B. duration of illumination

C. wavelength of light

D. angle of illumination

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

A beam of red light and a beam of 1ef* iyp *yzdn/z c ow2x7,0huviolet light each deliver the same power on a surface. For which beam is the number of photons hitting the surface per second the enhw1*x* 7 dyui fzyp,co2z0/greatest?

A. the red beam

B. the violet beam

C. The number of photons per second is the same for both beams.

D. This cannot be answered without knowing just what the light intensity is.

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

A metal surface is illuminated with blue ligh1:.:fueah -ki/*kk r-qj bxqrt and electrons are ejected at a given rate each with a certain amount of energy. If the intensity of the 1:j:/brfk er*.qi- ha-q kuk xblue light is increased, electrons are ejected

A. at the same rate, but with more energy per electron.

B. at the same rate, but with less energy per electron.

C. at an increased rate with no change in energy per electron.

D. at a reduced rate with no change in energy per electron.

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

A beam of X-rays of frequency f is incident upon a substance that scatters the 5o3gkf(lffl i.(ij p7beam in various directions. If we measure the frequency of the scattered X-rays, we will f3gfo 5 i 7pljfi(lk(.find

A. X-rays with frequency less than f.

B. X-rays with frequency greater than f.

C. only X-rays with frequency f.

D. X-rays with frequencies ranging from less than f to greater than f.

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A beam of X-rays of wavelength l is incident upon a substance that scatters ; niqkg +-*tg:.qyb, vll9fbd the beam in various directions. If we measure the waveleng bkdn+lqv ;g9l b:,f*yq.tg- ith of the scattered X-rays, we will find

A. X-rays with wavelength less than l.

B. X-rays with wavelength greater than l.

C. only X-rays with wavelength l.

D. X-rays which range in wavelength from less than l to greater than l.

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

When a photon is scattered from an electron, there will be an increaqmbu3degycd*8/9 :lwse in its

A. energy.

B. frequency.

C. wavelength.

D. momentum.

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

In the Compton effect, as the scattering angle increases:sz .p6mkg +y) enaxx7, the frequency of the X-rays scattered at thatmp nk:a.sy)exgz76 +x angle

A. increases.

B. decreases.

C. does not change.

D. varies randomly.

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

In a Compton scattering experiment, what scattering angle produces thp t6tq-g a99dhpg9mmz( xs86xe greatest change in wahsdz x6-t8 p9m69t(aq xm gg9pvelength?

A. $0^{\circ}$

B. $90^{\circ}$

C. $180^{\circ}$

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

24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When the accelerating voltage in an X-ray tube is dv z-a4m5m1gz /kf0btroubled, the minimum wavelength of t0-vbtzg5 k1m4zm/ fr ahe X-rays

A. is increased to twice the original value.

B. is increased to four times the original value.

C. is decreased to one-half the original value.

D. is decreased to one-fourth the 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

25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When a proton passes th4fhl4 xih.)n7 hmqn g;rough matter, it is possible for it to interact with the matter in such a way that an electron and a positrof)4i47n.xlmhh;hqn g n are produced; this interaction is referred to as

A. the photoelectric effect.

B. the Compton effect.

C. pair production.

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

As a particle travels faster, its de Broglie wavlzk /d*/ylcf3elength

A. increases.

B. decreases.

C. remains constant.

D. could be any of the given answers; it depends on other factors.

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

When an electron is accelerated to a higher speed, there is a decbw 8,6m2idglzlu 8) r.rm-qxh rease in its

A. energy.

B. frequency.

C. wavelength.

D. momentum.

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

Which one of the following would 6c6xjvee.proi 20ct 1tend to have the smallest wavelength if they are moving w.v6160e2rtjc co peixith the same speed?

A. electron

B. proton

C. baseball

D. bowling ball

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

The reason the wavelike nature of a moving basebal,zq zspwrt .+4l is not noticed in everyday life is that.qr t4 pz,s+zw

A. it doesn't have a wavelike nature.

B. its wavelength is too small.

C. its frequency is too small.

D. its energy is too small.

E. No one pays attention to such things except for the Mets; and they can't hit a curve ball anyway.

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 advantage might an electron mics scxjs7f2lzf 9b;soik )hkpo4(,2 w1 roscope have over a light microscope?

A. Electrons are more powerful.

B. Shorter wavelengths are possible.

C. Longer wavelengths are possible.

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

31#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The part of an electron microscope that plays the same r z1;zo e ,p03coqlobn.ole as the lenses do in an optical microscplz;. qoo3c, nboz0e1 ope is

A. the vacuum chamber.

B. the coils.

C. the cathode.

D. the deflector plates.

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

32#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Which of the following microscopes is capable of "photographing" individua .i 9awk*g3pyqhl p2.4 fwzzv7l atoms*2kzgwlv9qi .wy pa3.z hp7f4?

A. light microscope

B. scanning tunneling microscope

C. transmission electron microscope

D. scanning electron microscope

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

According to the Bohr model of the atom, the angular momewv0. 1i9 qz ok8wea/zj8ghehi, ,nz/wntum of an electron around the nz o, 8 iheqvnja0gw8k.zw19z,/ihe / wucleus

A. could equal any positive value.

B. must equal an integral multiple of h.

C. must equal an integral multiple of h/2p.

D. decreases with time, eventually becoming zero.

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

34#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When an electron jumps from an orbit w ,p+g6if*(6hly clu1h(iixcghere n = 4 to one where n = 2

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

The distance between adjd1-hykh burp; 8xy+0h acent orbit radii in a hydrogen atom

A. increases with increasing values of n.

B. decreases with increasing values of n.

C. remains constant for all values of n.

D. varies randomly with increasing values of n.

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

The energy difference between adjacent orbi/+fvmba31,embi ; l ogt radii in a hydrogen atom

A. increases with increasing values of n.

B. decreases with increasing values of n.

C. remains constant for all values of n.

D. varies randomly with increasing values of n.

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

What is the wavelength corresponding to the most intense light emitted :hon+n6 :3xc j 6tyjvqby a giant star of surface temperattojh jvqnxc6:n y6+:3ure 5000 K?

A. $576 \; nm$

B. $578 \; nm$

C. $580 \; nm$

D. $582 \; nm$

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

What is the frequency of the mpg3w:xk.tb2 t ost intense radiation from an object with temperatw. :pt3 kbxt2gure $100 ^{\circ}C$?

A. $2.9 \times 10^{-5} \; Hz$

B. $3.9 \times 10^{13} \; Hz$

C. $1.0 \times 10^{13} \; Hz$

D. $1.0 \times 10^{11} \; Hz$

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

How much energy is carried by a photon h48 udhe/ g.bu0mjg s7with frequency 110 GHz?

A. $1.1 \times 10^{-20} \; J$

B. $1.4 \times 10^{-22} \; J$

C. $7.3 \times 10^{-23} \; J$

D. $1.3 \times 10^{-25} \; J$

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

How much energy is carried by a photon with a freqr-7 7 se v:lzooa5c9lvuency of 100,000 GHz?

A. $4.73 \times 10^{-42} \; J$

B. $4.37 \times 10^{-24} \; J$

C. $6.63 \times 10^{-24} \; J$

D. $6.63 \times 10^{-20} \; J$

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

What frequency of electromagnetic radiation dpwne0 vw9 m8zr+,1buhas energy $4.7 \times 10^{-25} \; J$?

A. $710 \; kHz$

B. $4.7 \; MHz$

C. $710 \; MHz$

D. $1.4 \; GHz$

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

What frequency of electromagnetic radiation has6bddzpqo sz h7;-. av2+.0 ppajwy+fz an energy of 58.1 meV?

A. $1.4 \; MHz$

B. $711 \; MHz$

C. $7.1 \; GHz$

D. $14 \; GHz$

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

43#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the photon energy 1d* y(*f)fqp / fq2y w6mhxbkdrj0zj* of red light having wavelength 640 nm?

A. $1.13 \times 10^{-19} \; J$

B. $1.31 \times 10^{-19} \; J$

C. $3.11 \times 10^{-19} \; J$

D. $1.94 \times 10^{-19} \; J$

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

How much energy, in joules, is carrigjx68.u)fg8j 5w2 zoppi8s sqed by a photon of wavelength 660 nm?

A. $1.46 \times 10^{-48} \; J$

B. $3.01 \times 10^{-19} \; J$

C. $6.63 \times 10^{-34} \; J$

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

45#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

At what rate are photons emitted by a 50-W sodium vapor lampzj- k4cbs *hb1? (Assume that the lamp's light is monochromatic and oh1bbzj4ck-s *f wavelength $589 \; nm$.)

A. $1.0 \times 10^{20}/$s

B. $1.5 \times 10^{20}/$s

C. $2.0 \times 10^{20}/$s

D. $2.5 \times 10^{20}/$s

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 metal has a work function of 4.5 eV. Find the marz;;d 4ykcuz (std5p/c 27dpwximum kinetic energy of the photoelectrons if the waveld; dzp( zc;/7tyk wd5r4pscu2ength of light is 250 nm.

A. zero

B. $0.37 \; eV$

C. $0.46 \; eV$

D. $0.53 \; eV$

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

When light of wavelength 350 nm is incident on a metaub+1xm1i): e/i 3b,i vlucdf dl surface, the stopping potential of the photoelectrons 1bfvieii3, culbmd)1du+ / :xis 0.500 eV. What is the work function of the metal?

A. $0.500 \; eV$

B. $3.04 \; eV$

C. $3.54 \; eV$

D. $4.12 \; eV$

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

When light of wavelength 350 nm is i(*s bz 5a p8hx)i7s kao8dm/xancident on a metal surface, the stopping potential of the photoelectrons is 0.500 eV. What is the td7 )aka8a5 z*8x (xpsso mbih/hreshold frequency?

A. $3.47 \times 10^{14} \; Hz$

B. $3.74 \times 10^{14} \; Hz$

C. $4.73 \times 10^{14} \; Hz$

D. $7.34 \times 10^{14} \; Hz$

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

When light of wavelength 350 nm is incident on a metaca9t9h.9 d 0una+uo b91vqsqel surface, the stopping potential of the photoelectrons is 0.500 eV. Whaen q 9q0s1 u9utado9 vb+a.ch9t is the maximum kinetic energy of the electron?

A. $0.500 \; eV$

B. $3.04 \; eV$

C. $3.54 \; eV$

D. $4.12 \; eV$

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

A monochromatic lightl5e p 83ypwv.z 9(gddtgx4kx; is incident on the surface of a metal with work function 2.50 eV. If a 1.0-V stopping potentt(g dpkd.; 85l wgx yxpzev439ial is required to make the photocurrent zero, what is the wavelength of light?

A. $354 \; nm$

B. $423 \; nm$

C. $497 \; nm$

D. $744 \; nm$

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

If the scattering angle in Co f;4mvv+kfq-/xjy-ogk m+ mnx**sjf: lw x:c,mpton's scattering is 90e. What is the wavelength shiftg*mo4vq +sxx: -kjm*: f+wynljx-cvfmf, k;/?

A. $1.22 \times 10^{-12} \; m$

B. $2.43 \times 10^{-12} \; m$

C. $3.65 \times 10^{-12} \; m$

D. $4.85 \times 10^{-12} \; m$

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

52#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

X-rays of wavelength 0.20 nm are scattered by a metal. The wavelength shif9ct0 nptua0i3 t is ob9 uptai0 n03ctserved to be
$2.1 \times 10^{-12} \; m$ at a certain scattering angle measured relative to the incoming X-ray. What is the scattering angle?

A. $20^{\circ}$

B. $40^{\circ}$

C. $60^{\circ}$

D. $80^{\circ}$

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

53#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

X-rays with a wavelength of 0.00100 nm are scattered by free electrons at 1gtu8rdrw x*4 adyl:wy :y;2w530e. What:; xawuydy 5l*yrwrd28 g tw:4 is the kinetic energy of each recoil electron?

A. $2.5 \; MeV$

B. $5.0 \; MeV$

C. $7.5 \; MeV$

D. $10 \; MeV$

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

54#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the wavelength ogi09*abe87sn xxf 0 yu3iki/of the matter wave associated with a ball of mass 0.50 kg moving with a s iyik 8gxxai0/9f u b70neos*3peed of 25 m/s?

A. $3.5 \times 10^{-35} \; m$

B. $5.3 \times 10^{-35} \; m$

C. $3.5 \times 10^{-33} \; m$

D. $5.3 \times 10^{-33} \; m$

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

55#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the de Broglie7 uodiz-x8/9* zidk/)vweeur wavelength of a ball of mass 200 g moving with a speed of 30 m/s?ivw9u/ 8euz -oed7r* / x)kzid

A. $1.1 \times 10^{-34} \; m$

B. $2.2 \times 10^{-34} \; m$

C. $4.5 \times 10^{-28} \; m$

D. $6.7 \times 10^{-27} \; m$

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

56#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the wavelengi:oxsb2 /mu(t3i6fqgm ww(v- th of the matter wave associated with an electron moving with aqmwsw3 g fim /tbv-o62i:(ux( speed of $2.5 \times 10^7 \; m/s$?

A. $29 \; pm$

B. $35 \; pm$

C. $47 \; pm$

D. $53 \; pm$

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

57#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron is accelerated through a potential difference*facyg k1ka0;(sv5rx of 150 V. What is its wavela;ckxsv*5yg(f k0 ar1ength?

A. $0.1 \; nm$

B. $1 \; nm$

C. $1 \; mm$

D. $1 \; cm$

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

58#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron is accelerated by a poten xpqt6x0uh8 .xeui bds(l5g) 7tial difference of 100 V. What is its wavelengthd0i(5). ubp8tx hqge76xsulx ?

A. $0.122 \; nm$

B. $0.212 \; nm$

C. $0.221 \; nm$

D. $0.313 \; nm$

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

59#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron is accelerabqrck ;2r/kor 8k8q;rted by a potential difference of 100 V. What is its momen;o/8kk r;2rk 8q crbqrtum in $kg \cdot m/s$?

A. $3.45 \times 10^{-24}$

B. $3.54 \times 10^{-24}$

C. $4.53 \times 10^{-24}$

D. $5.43 \times 10^{-24}$

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

60#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron is accelerated byior,gs /vh 0h.,i0hx5 x oc6ab a potential difference of 100 V. What is its kinetic en0.io0ro , has5vcx6g bhi,x /hergy?

A. $1.26 \times 10^{-17} \; J$

B. $1.62 \times 10^{-17} \; J$

C. $2.16 \times 10^{-17} \; J$

D. $2.61 \times 10^{-17} \; J$

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

61#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person of mass 50 kg has a w7eyh9 ipf17y p8. , y6n6fempbiixe 7tavelength of $4.4 \times 10^{-36} \; m$ when running. How fast is she running?

A. 2.0 m/s

B. 3.0 m/s

C. 4.0 m/s

D. 5.0 m/s

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

标记此题

62#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron has a wavelength of 0.123 nm. d6sh k8wp 3qod5pf(w :n;q 3hl What is its energy in eV? (This energy is not in the relativistic ref(swhd6 kdnw8 pq qh35p:l o;3gion.)

A. $20 \; eV$

B. $60 \; eV$

C. $80 \; eV$

D. $100 \; eV$

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

63#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If $r_1$ is the smallest orbital radius around a single proton, then $r_6$ is equal to

A. $36 r_1$.

B. $12 r_1$.

C. $6 r_1$.

D. $2.45 r_1$.

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

64#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The electron of a hydrogen atom makes a transition from-)- rg nh qk1teqrlc8;lgv4 k8ye -w7e the n = 5 state to the n tr e nelr8-)c81wle-k gk-y4 qqh7gv;= 2 state. What is the wavelength of the emitted photon?

A. $344 \; nm$

B. $434 \; nm$

C. $443 \; nm$

D. $523 \; nm$

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

65#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The binding energy of the hydrogen ew9:ux vv5 /dm0 iwug5atom in its ground state is -13.6 eV. What is th9iw:e0wvu5um xg5dv/ e energy when it is in the n = 5 state?

A. $2.72 \; eV$

B. $-2.72 \; eV$

C. $0.544 \; eV$

D. $-0.544 \; eV$

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

66#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom in tk- )d)ptgzvcy5bzbe.3uk a5c*t a0: e he ground state absorbs a photon of energy 12.09 eV. To which se kd.t0t*k3)5 gzuc-pa:cb ) vayzb5etate will the electron make a transition?

A. n = 2

B. n = 3

C. n = 4

D. n = 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

67#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the ionization energy of the neutral hydrogen at)/ r qm,m::r4cee k4u5r2 kpod.xants om?

A. $27.2 \; eV$

B. $13.6 \; eV$

C. $6.8 \; eV$

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

68#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the ionizationyq g+7t7gb* cm energy of singly ionized helium?

A. $54.4 \; eV$

B. $27.2 \; eV$

C. $13.6 \; eV$

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

69#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In making a transition 3 2mbguotyd0k n ya+2i5 06fsjfrom state n = 1 to state n = 2, the hydrogen atom must

A. absorb a photon of energy 10.2 eV.

B. emit a photon of energy 10.2 eV.

C. absorb a photon of energy 13.58 eV.

D. emit a photon of energy 13.58 eV.

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

70#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In state n = 1, the energy of the hydrogen atom is -13.58 eV. Whacxx ht2vl0g(vk*, + q:);q bodazjnk9 t is its energy in skctbgj ,z 0)x+do *ha9kv:(xqql; nv2tate n = 2?

A. -6.79 eV

B. -4.53 eV

C. -3.40 eV

D. -1.51 eV

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

71#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The wavelength of a ruby laser is 694.3 nm. What is abv 0t4dkkrki j+c)oc9: f5s:the energy difference between the two energy states :k)tkd v9o4rc jb s i:k50+facinvolved in laser action?

A. $1.537 \; eV$

B. $1.646 \; eV$

C. $1.786 \; eV$

D. $1.812 \; eV$

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

72#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron is movingtl3g tnx7kfyc( v zxd5tub kn, f:/9;; about a single proton in an orbit characterized by n = 4. How many of the electron's de Broglie wavelengths fit into the circumference of this ubx5c(l zt97k kyngfx3tnvd ;t:,/; forbit?

A. 1

B. 2

C. 4

D. 16

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

本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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

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	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72

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	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72

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	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72