Physics Unit27: Early Quantum Theory and Models of the Atom

1#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In a pair of acceleratingvw6*.e0k lgm h plates, such as found inside a CRT, the electrons are emiv* 0ge6l .hmkwtted

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:

Correct Answer:

Join the discussion for this question

Mark Problem

2#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A blackbody is an ideal sy5t.hxkx/ig; w ov *c-k4t zpz;stem 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:

Correct Answer:

Join the discussion for this question

Mark Problem

3#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Which color in the visibll wzq-p08 4jmle spectrum is associated with the lowest temperature?

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

4#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

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:

Correct Answer:

Join the discussion for this question

Mark Problem

5#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The ratio of energy to frequegtwi( *v: 8bxcg dam-omzg:82ncy 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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

6#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The fundamental SI units of Planck's constant are xiwa1y0p/tvixuw36 xmn 3 0dm+ u.b-v

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:

Correct Answer:

Join the discussion for this question

Mark Problem

7#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Planck's constant has a value 10 dsuzamv66p5u+f 4o . rosurof

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:

Correct Answer:

Join the discussion for this question

Mark Problem

8#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A photon is a particle e/.lf.l o w5men+2 ydnthat

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:

Correct Answer:

Join the discussion for this question

Mark Problem

9#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Which of the following peikkil(k.66k t.zs * is an accurate 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:

Correct Answer:

Join the discussion for this question

Mark Problem

10#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

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:

Correct Answer:

Join the discussion for this question

Mark Problem

11#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The energy of a photon dependtm sqw;vb /x3)- sqpv)-u n+hxs 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:

Correct Answer:

Join the discussion for this question

Mark Problem

12#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

If the wavelength of a photon ipx3 z+y ont ifu;guf1i 9 s/cno834e.rs halved, by what factor does its energy change?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

13#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Which color of light has the lowest energy photonz*rzyrsqav l*p,9 ;m(.(kj lw s?

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

14#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The photoelectric effect is exgz; .w xrwzlnh(gc (8+plainable assuming

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:

Correct Answer:

Join the discussion for this question

Mark Problem

15#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In order for a photon to eject an electron from a metal's surface j, nqjhr :ojzuq0d(0 5in the photoelectric effect, the phot(j0j5udrzq:jqhn0o, on'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:

Correct Answer:

Join the discussion for this question

Mark Problem

16#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The kinetic energy of the photoelectron depends on which of the folps1-ayx57xs 6xjp b+plowing?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

17#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A beam of red light and a beamjubrz*mo0s.12: n f rd of violet light each deliver the same power on a surface. For which beam is the number of photons hitting the surface per se s.r d:ubz 2*n0orj1fmcond the 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:

Correct Answer:

Join the discussion for this question

Mark Problem

18#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A metal surface is illuminatei jiqxy ;jvl,xefmv8(n6h,+8d with blue light and electrons are ejected at a given rate each with a certain amount of energyl8+ h,jq,yniji ;(6xfvemx v8. If the intensity of the blue 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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

19#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A beam of X-rays of frequency f is incident upon a substance that scatters the 0p qp86o sw *+bpxrtm.n1(ogsbeam in various directions. If we measurw*(m1qps8 +tx0 os.n 6bogpr pe the frequency of the scattered X-rays, we will 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:

Correct Answer:

Join the discussion for this question

Mark Problem

20#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A beam of X-rays of wavelength l is incident upon a substance that s obw f5v(vi/wgh* c3.yp0 zoe6catters the beh vg.ve/b* cyiwo 605fpow3( zam in various directions. If we measure the wavelength 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:

Correct Answer:

Join the discussion for this question

Mark Problem

21#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When a photon is scattered from an el cfn. m,z0-gt 8m7gpggectron, there will be an increase 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:

Correct Answer:

Join the discussion for this question

Mark Problem

22#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In the Compton effect, as the scattering angle increases, t(0 j zf9y6cb4jj dv,zihe frequency of the X-rays scattered at that a0jzvc6b, j ( 49diyzjfngle

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

23#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In a Compton scattering explrhs knf*,+ce 2 osi)1eriment, what scattering angle produces the greatest change in fl)ko,h1i2ens c+rs *wavelength?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

24#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When the accelerating voltage in an X-ray tube is doubled, the minimud mu+sd it-vhf52tno6h*, wr9m wavelength d-s oh 2tf+vn9mhiu5wd*,rt 6of the 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:

Correct Answer:

Join the discussion for this question

Mark Problem

25#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When a proton passes through matter, it is possible foxugu.7 a7ov0e 7fnb5 dr it to interact with the matter in such a way that an electron and a positr b 7gavfox 0u5nue7d7.on 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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

26#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

As a particle travels faster, its de Broglie wavele8bqfqo z/ u*v+6o3twangth

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:

Correct Answer:

Join the discussion for this question

Mark Problem

27#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When an electron is accelerated to a higher speed, there is a (2+ai0vbbv b op1kd22 vd;/1qerw prvdecrease 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:

Correct Answer:

Join the discussion for this question

Mark Problem

28#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Which one of the following would tend t 6d:xs3jemz5:8z d/p4bhu l aqo have the smallest wavelength if they are moving with the same speed54jhzzadbqx3e :6s/dpu ml:8 ?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

29#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The reason the wavelike nature ot3/+wsvk p ry5 vut9zf7ep768n ov*ss f a moving baseball is not noticed in everyday life is thatyp* 5 evk7vu9 toswvpr8 t/ zfs7+s63n

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

30#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What advantage might an electron microscope ha2ov+ c1wro, yc,emw5vve 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:

Correct Answer:

Join the discussion for this question

Mark Problem

31#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The part of an electrojfcdu 772o+a i( i)pkgn microscope that plays the same role as the lenses do in a fdc+ ai()j2pk7ogu7in optical microscope 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:

Correct Answer:

Join the discussion for this question

Mark Problem

32#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Which of the following microscopes is capable v rmin(g8o1/e of "photographing" individual atoms?onrvgme 1(i 8/

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:

Correct Answer:

Join the discussion for this question

Mark Problem

33#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

According to the Bohr model of the atom, the angular momentum of an electron a j1lp*cflw aov8 ++mw2sb kc)6romwacfwpk +c o2bl) l+js6*8 v1und the nucleus

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:

Correct Answer:

Join the discussion for this question

Mark Problem

34#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When an electron jumps from an orbit wh3kvy,ay ;jhk :s5u2w sere 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:

Correct Answer:

Join the discussion for this question

Mark Problem

35#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The distance between adjacent orbit radii inq:1n 7tsvntz( 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:

Correct Answer:

Join the discussion for this question

Mark Problem

36#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The energy difference between adjacent orbit radii in a hyw1pax: r : kix.jkb y;;(3csxzdrogen 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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

37#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the wavelength corresponding to the most71, ;qob wuo.kpj m(hju -vnz/ intense light emitted by a giant star of surface t-kj(v/qpnjhom wubzu,1 ; .o7emperature 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:

Correct Answer:

Join the discussion for this question

Mark Problem

38#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the frequency of the most intense radiation from an o5rljf(wy ,olde:.sl2 bject with temperatllylo,2 we ( rsd5fj.:ure $100 ^{\circ}C$?

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

39#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How much energy is carried by a photon with frequency 11;qla 68s i7-ydoh m:als(x pp+0 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:

Correct Answer:

Join the discussion for this question

Mark Problem

40#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How much energy is carried byhu4 c32;nn qe/9vtwscrsf( f2 a photon with a frequency 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:

Correct Answer:

Join the discussion for this question

Mark Problem

41#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What frequency of electromagnetic radiation has en x+m)zh2o 6winergy $4.7 \times 10^{-25} \; J$?

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

42#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What frequency of electromagnetic radiation has an energy ofnm30 de-zmq. 8 tt3k5) qvoyxu 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:

Correct Answer:

Join the discussion for this question

Mark Problem

43#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the photon energy of red light having wavelength7;jn ln in.ri 1z4ab4w 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:

Correct Answer:

Join the discussion for this question

Mark Problem

44#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How much energy, in joules, is ettq 6wehfud2*9hc9drf7 4e/:q txd/ carried 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:

Correct Answer:

Join the discussion for this question

Mark Problem

45#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

At what rate are photons emitte/oo+/csbi1 b(qij xwv9rf1w5 woso)6 d by a 50-W sodium vapor lamp? (Assume that the larcqws16i fooox b) 1+jb9s// v5(i wowmp's light is monochromatic and of 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:

Correct Answer:

Join the discussion for this question

Mark Problem

46#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A metal has a work function of 4.5 eV. Find the maximuzt9y4l.kagiv.g )z/ 2 o1q cjq7.ze ykm kinetic energy of the photoelectrons if thoczta7gi./yzzqj l y k9 2qe1v).k.4ge wavelength 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:

Correct Answer:

Join the discussion for this question

Mark Problem

47#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When light of wavelength 35-stff :vlz*iyr ib34 1)jg) ud0 nm is incident on a metal surface, the stopping potential of the photoelectrons is 0.500 eV. j1us -3fbrt ii*y)g:fd4 lzv ) 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:

Correct Answer:

Join the discussion for this question

Mark Problem

48#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When light of wavelength 350 nm is incident on a metap6u aco1fuv9 4yii .0lzkz h3x)u ,h+zl surface, the stopping potential of the photoelectrons is 0.500 eV. What is the threshold freque3v+kla o)i 9ixh u 0z164cpz,.u fzyuhncy?

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

49#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

When light of wavelength 350 nmls1fm+n)z; d yq+i .dt is incident on a metal surface, the stopping potential of the photoelect +;i).+ym zsd1 tqnfdlrons is 0.500 eV. What 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:

Correct Answer:

Join the discussion for this question

Mark Problem

50#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A monochromatic light is incident on the surface of a metal with w96 :js4stt9fv 9ewo)fu2x rtj +adsz9ork function 2.50 eV. If a 1.0-V stopping potential is required to make the phfu2os:d )tw6s+e 9r9fjajxtv 4s t99zotocurrent 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:

Correct Answer:

Join the discussion for this question

Mark Problem

51#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

If the scattering angle in Comptohhl6af x );v w4yxbpgf3 +8(vvn's scattering is 90e. What is the wavelength shift?8 lb)3vy gfvpfw 4 +v;6axhxh(

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:

Correct Answer:

Join the discussion for this question

Mark Problem

52#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

X-rays of wavelength 0.20 nm are scattered by a metal. The wavelength +ce :n, obuhw0no 22smshift is observed ho cm+ns:0e 2ubo2, nwto 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:

Correct Answer:

Join the discussion for this question

Mark Problem

53#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

X-rays with a wavelength of 0.00100 nm are scattered by f 4ayci 8ri2xipy( jwrwrx8c*9+q 4lo 5ree electrons at 130e. What is the kinetic*x cprc5xiyq8(+j4 9oir 8al4i2 rwy w 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:

Correct Answer:

Join the discussion for this question

Mark Problem

54#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the wavelength of the matter wave associated w2lp(gi tux)due vl9*v m9: f+vith a ball of mass 0.50 kg mov9 vpglt)*vxvuefl+(9 2um:diing with a speed 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:

Correct Answer:

Join the discussion for this question

Mark Problem

55#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the de Broglie wavelength olbp -e2 8/m ssk2;fiedf a ball of mass 200 g moving with a speed of 308dm2bes-f 2p;kil s/e m/s?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

56#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the wavelength of the matter wave associated with an electron moving wi2lb jqs. o)wnoamo9.jrt(:ma 51 ls-d th a speell: -so52jto9(o1narw .mdb q)sa. mjd 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:

Correct Answer:

Join the discussion for this question

Mark Problem

57#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron is accelerated through a potential difference of 150 V.j c nxbg.q*h08bms+0r What is its wavegs mc. 0rb* jb+xnq08hlength?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

58#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron is accelerated by a potential difference of 100 V. What is itx39j/pg 5cvvw ll 7)xcwy +j35hlu:qh s wavelenx/+yllq5v5g)j:w9huxh3cw v 7pcl j3gth?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

59#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron is accelerated by a potential difference of 100 V. What is its mv etfb-t3 0+p9inwp- *mrsd8aomentum in sra ep8btt *9v0+-mpfi nd3-w$kg \cdot m/s$?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

60#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron is accelerat,.ob y :hixtc3ed by a potential difference of 100 V. What is its kinetic bt3h.: yx,coi energy?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

61#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A person of mass 50 kg has a wavelennku ac9j p7*/t7krxr4 gth 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:

Correct Answer:

Join the discussion for this question

Mark Problem

62#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron has a wavelength of 0.123 nm. What is its energy in *1 c;p:n( 5w)bsk hoyjds5rs beV? (This energy is not in the relativistic rec1:wns )sjshp*5(y5 d;rko bbgion.)

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:

Correct Answer:

Join the discussion for this question

Mark Problem

63#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

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:

Correct Answer:

Join the discussion for this question

Mark Problem

64#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The electron of a hydrogen atom makes a transition fndimnhx82xjk j/7g;**un,t 2x k-mkurom the n = 5 state to the n = 2 state. What is the wavelength of the emittem x;jnug 2nim2txx*n -8*k/dh7 ,ukjk d 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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

65#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The binding energy of the hydrogen atom in its 38uj4muz0n zi3y nq i.8r 32e3o:oqdj fsiv-r ground state is -13.6 eV. What is the energy when it is-d 8zjom 3:nniryiz3jo2 q 3 .qe0fiv384rusu 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:

Correct Answer:

Join the discussion for this question

Mark Problem

66#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A hydrogen atom in the ground state absorbs amfv1r:2mk5*isf jio3 photon of energy 12.09 eV. To which state w*oimf1m j3f:5v i2r skill 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:

Correct Answer:

Join the discussion for this question

Mark Problem

67#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the ionization energy of the neutral hydrogen atom?l)0 rio (qawbi1 mgntg) 74ty4

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:

Correct Answer:

Join the discussion for this question

Mark Problem

68#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the ionization energy of sinmg,rc6ku rt8 l2rgx.av e*w8dp8c9d4 gly 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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

69#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In making a transition from state n = 1 to state n = 2, the hl3we4qko )i q,ydrogen 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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

Mark Problem

70#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In state n = 1, the energy of the hydrogen atom is -13.58 eV. What is its jkdc*3 7dlu:+; hw6samt yxe:energy in state n 6hx*dy ;tjldmkcw3a7+: : eus = 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:

Correct Answer:

Join the discussion for this question

Mark Problem

71#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The wavelength of a ruby laser is 694.3 nm. What ist3t8 4g1g z v;,wd0cnera4bl yzwm 0.x the energy difference between the two energy states involved in laser act4ybgldt4 8 1m, w0rxz0ez 3;.vntwacgion?

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:

Correct Answer:

Join the discussion for this question

Mark Problem

72#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron is moving about a single proton in an orbit characterized by n = 4.iqm2p t1s4hu *n;ay7 y Ho y1qati *4 u2y7nmph;sw many of the electron's de Broglie wavelengths fit into the circumference of this orbit?

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:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，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

		Remember me	Forgot password?
Password			Register Now

Unused Images

Used Images in Current Log

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