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PRACTICE:Physics Unit27: Early Quantum Theory and Models of the Atom



 Author: physics   Total Marks: 72 mks  Marks Awarded: _____________

User Name: No Login  Start Time: 23年05月01日 10:35  Switch to Whole-Paper Mode

Mark Problem
1#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a pair of accelerating plates, sc1 ;3t. - 222cnyiyvigoimkblyy *u4puch as found inside a CRT, the electrons are emiy4p-;clby* ug2y21 .o2 nt ck3myi viitted

Correct Answer:    

Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A blackbody is an ideal system thl 6bel4eqzk3 *txg-)zh2tk 6i6 stqa5at

Correct Answer:    

Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which color in the visible sn qhm0tn8su: 2pectrum is associated with the lowest temperature?

Correct Answer:    

Mark Problem
4#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Planck's constant

Correct Answer:    

Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The ratio of energy to frequency for a given photon hij j3* cs8d /4mbob-ygives

Correct Answer:    

Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The fundamental SI units c uxd*ngl:)p9of Planck's constant are

Correct Answer:    

Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Planck's constant has a valuel d+:oa 8+mds hd8i0xt of

Correct Answer:    

Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A photon is a particle thntom)m+ yv d/3m eux,(at

Correct Answer:    

Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which of the following is an accurate statiq1uid /26m +l8ohpvv ement?

Correct Answer:    

Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is a photon?

Correct Answer:    

Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The energy of a photon 25ibgvvtw (6cp: ounj9b;j)c depends on

Correct Answer:    

Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the wavelength of a phol23nenmsl3x2 vyk v,1 ton is halved, by what factor does its energy change?

Correct Answer:    

Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which color of light has the lowestni/def s8u 68h energy photons?

Correct Answer:    

Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The photoelectric effect is explainable a evk19lr0f8: ovfvor*e1do o+ssuming

Correct Answer:    

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 in thezx4z72lxouc1+ 3yx zz photoelectric effec yzuz7+x4xz 3z2clxo 1t, the photon's

Correct Answer:    

Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The kinetic energy of the photoelecoz(jvspkaf 4p(tdu)whh0- 3e3 gm: q )tron depends on which of the following?

Correct Answer:    

Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A beam of red light and a beam of viol ;6pki h 00moss8ru1bhcwgt8.et light each deliver the same power on a surface. For which beam is the number of photons hittingmh 1 8hbtwrp8;ku0.0ic gso6 s the surface per second the greatest?

Correct Answer:    

Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A metal surface is illuminated with blue light and electrcpsg7y3j ,8uktb t l2+ons are ejected at a given rate each with a certain amount of energy. If the intensity of the blue light is increased, electronsut+,kyg 78lcbp j3t2 s are ejected

Correct Answer:    

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 t 4t: 02fprhwegp* r,zj(xgtc l 98e;bthe beam in various directions. If we measure the frequency of the scattered X-rays,r(pghtrb42 wtxz*tj cl 0;:9efp ,eg 8 we will find

Correct Answer:    

Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A beam of X-rays of wavelength l inuyk(k jwh7 *2s incident upon a substance that scatters the be*2ku wj7y hkn(am in various directions. If we measure the wavelength of the scattered X-rays, we will find

Correct Answer:    

Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When a photon is scattere 1stt/cdup1h; d from an electron, there will be an increase in its

Correct Answer:    

Mark Problem
22#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In the Compton effect, as the scatter ;u(81vgew1e fu/qvc ving angle increases, the frequency of the X-rav1ce8w;e fv(g/qu v u1ys scattered at that angle

Correct Answer:    

Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a Compton scattering experiment, what scattering angle produces the greas .l r :txurpg;z8u-d-)sdbc 6 3o px02ntp8tgtest c u06ss txuc x8-tp)23rg8.ltnzb-p:rg d; dpohange in wavelength?

Correct Answer:    

Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When the accelerating vij 49eq,c 2rj bx9bv6uu220eyco; ter+ +ll qdoltage in an X-ray tube is doubled, the minimum wavelength of the Xerir9j uv9e 4;y62o +d2+ j 2bx0e ubccl,lqqt-rays

Correct Answer:    

Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When a proton passes throughfm *u(f*g7 c ipgry9 7r6nlyvlj(1c 3.rqui2b matter, it is possible for it to interact with the matter in such a way that an electron and a pr(*1ucc 36. frgig2*p(ulibn97y ryqj v7 fml ositron are produced; this interaction is referred to as

Correct Answer:    

Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  As a particle travels faster, its de Broglie wave;0 p3 tvi7u yq(aoobk;m 5bskdg+:,fylength

Correct Answer:    

Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When an electron is accelec+ cah32ef.vp c1za;8w:klu v rated to a higher speed, there is a decrease in its

Correct Answer:    

Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which one of the followvboam*/(z r:cing would tend to have the smallest wavelength if they are mb/racvzo( :* moving with the same speed?

Correct Answer:    

Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The reason the wavelike na6. x+llwo 0aeojt d6dw afd5: bj750xcture of a moving baseball is not noticed in everyday life iaa tl6be lwwo+dx0d.:d6c 0 5fx7 jj5os that

Correct Answer:    

Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What advantage might an electron microscope have o)i f(4x2h ty1nxeuf( *hre/tiver a light microscope?

Correct Answer:    

Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The part of an electron microscope that plays the same role as the le :pxtfw+ dsb3jmqf2* hxp1n5 ,nses do in an optical microscope isf wxb*+5mft2 h: xj,pds1 3pnq

Correct Answer:    

Mark Problem
32#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which of the following microscopes -u .csw nqana, ;g4,ojis capable of "photographing" individual atomu,; wa4nan -, cgojqs.s?

Correct Answer:    

Mark Problem
33#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  According to the Bohr h jhwo( x1e*(q)it q(bmodel of the atom, the angular momentum of an electron around the nucleush)q itj*e 1(xo wb((qh

Correct Answer:    

Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When an electron jumps from an orbit where n = 4 to one whh77rzyds g-pit,n,m zjq:1k ,ere n = 2

Correct Answer:    

Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The distance between a j+cdkrqr7 y7sba )*+adjacent orbit radii in a hydrogen atom

Correct Answer:    

Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The energy difference between adjacent orbit radii in a hydrogen ato (;uolxq-f - ydtymt*ea6xre3c:3f .um

Correct Answer:    

Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the wavelength corresponding to the most intense light :ncnvqh rwk3c86k z/4 emitted by a giant star of surface temperatur4kr hz8:qk vn63cwc/n e 5000 K?

Correct Answer:    

Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the frequency of thedr(zyyinv0 pnz5 6hi7gdp f:76 mz1. u most intense radiation from an object with temperature 7 nyn6id :r h zdu.70mv5zzppgif16(y$100 ^{\circ}C$?

Correct Answer:    

Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  How much energy is cay kncw-i+1l4;d0cl ay rried by a photon with frequency 110 GHz?

Correct Answer:    

Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  How much energy is carried by a ns+h ujw1-g7o6-nr4*pv iuu a photon with a frequency of 100,000 GHz?

Correct Answer:    

Mark Problem
41#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What frequency of electromagnetic radiationpak wy,w1 .:i *yvisq3gwiwp-)w+ d*w has energy $4.7 \times 10^{-25} \; J$?

Correct Answer:    

Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What frequency of electromagnetic radiation has an energy of 58.1 ;vcpe5grq9x, meV?

Correct Answer:    

Mark Problem
43#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the photon energy of relkf )xia,p8mukvmu c;e-j1 1ex: 00nnd light having wavelength 640 nm?

Correct Answer:    

Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  How much energy, in joules, is carried by a photon of wavez 2jmipawy8p)ce ;v:6 length 660 nm?

Correct Answer:    

Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  At what rate are photons emitted by a 50-W sodium vapor lamp? (Assuts u:py1 vlwk+pw0yo7;; (stfme that the lamp's light is monoo7fvk(1lp yt;uws +:;st y p0wchromatic and of wavelength $589 \; nm$.)

Correct Answer:    

Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A metal has a work function of 4.5 eV. Fi aqahujp(9hp j or 2c4-r*2ma6nd the maximum kinetic energy of the photoelectrons if the wavelength2o(-h jara* 9rja6cupphq4 m2 of light is 250 nm.

Correct Answer:    

Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When light of wavelength 350 nm is incident on a metdxkr 21 3gyr3/1da hqb,za2 vtal surface, the stopping potential of the photoelectrons is 0.500 eV. What is the work 2g1,xqv d1rzakyr3a td b/23hfunction of the metal?

Correct Answer:    

Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When light of wavelength 350 nm is incident on a metal surface pxtrsp p:u13 c92-gzy, the stopping potential of the photoelectrons is 0.500 eV. Whatpguy3pc9s:-xtrp 1z 2 is the threshold frequency?

Correct Answer:    

Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When light of wavelength 350 nm is vcq4uxmg4o zva3(l 34 incident on a metal surface, the stopping potential of the photoelectrons is 0.500 eV. What is the maximum kinetic enez x3a(vvm43lg o 44qucrgy of the electron?

Correct Answer:    

Mark Problem
50#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A monochromatic light is incident on thedx4,sa h/:ri *;l hfc3 hrl8ik surface of a metal with work function 2.50 eV. If a 1.0-V stllrh* rc;a3kh48 i:sx,h di f/opping potential is required to make the photocurrent zero, what is the wavelength of light?

Correct Answer:    

Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the scattering angle in Compton's scattering is 90kkwa/ ;vckagu8;7mf.e. What is the wavelength shiftg kc;f/ a km.;7vwkau8?

Correct Answer:    

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 wavelengikh6w+kx3rl 8)qs 3lath shift is observed to 8 h3xls i6q+)krk3wa lbe
$2.1 \times 10^{-12} \; m$ at a certain scattering angle measured relative to the incoming X-ray. What is the scattering angle?

Correct Answer:    

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 free electrons at 130e3 w0q:1ew6hfxy ;vgy gfzugg+v lo 5-i;fl;8d. What is the kinetic energy of each recoil electrof;o y;yl dggg3 6:x5ilef8-gw0;uvq 1w+ fvhzn?

Correct Answer:    

Mark Problem
54#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the wavelength of the m/ fz jt+exjcwgg57-kbz7e l u5w01dul( 9b1gratter wave associated with a ball of mass 0.50 kg moving with a speede9 r lkf0uubx57ej5 lb (w7gjcg+1/zztgdw -1 of 25 m/s?

Correct Answer:    

Mark Problem
55#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the de Broglie wavelexmc.9d *f (oprngth of a ball of mass 200 g moving with a speed of x.drcf9 mp*o( 30 m/s?

Correct Answer:    

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 wvn .kx8pye9d0 ith avye n8.dxp09 k speed of $2.5 \times 10^7 \; m/s$?

Correct Answer:    

Mark Problem
57#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An electron is accelerated through a potential difusn16, jstf i839n wpx6pwh8qi( 1cupference of 150 V. What is its wavelengthsp pis3i16j6wtw,nu xn pcq (9u8f1h 8?

Correct Answer:    

Mark Problem
58#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An electron is accelerated by a potential difffbgbhb u ,p74.5jw k h8cpi36kn;jl1ierence of 100 V. What is its waveleni4c ;5lpj.hwkhj8fug6ibb b,p 3k 71ngth?

Correct Answer:    

Mark Problem
59#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An electron is accelerated by a pote4f,p ).;wiba2n0bg j5bqi v bfntial difference of 100 V. What is its momen ,w5fg.bqina)b4ifv2 b jbp0 ;tum in $kg \cdot m/s$?

Correct Answer:    

Mark Problem
60#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An electron is accelerateqe;z*;u ze- oed by a potential difference of 100 V. What is its kineti*e z o;zqeeu-;c energy?

Correct Answer:    

Mark Problem
61#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person of mass 50 kg has,waibo;972 ;l r)be 7) nog-gtbeqoex a wavelength of $4.4 \times 10^{-36} \; m$ when running. How fast is she running?

Correct Answer:    

Mark Problem
62#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An electron has a wavelength of 0.123 nm. Wy1:ii gmd6/vihat is its energy in eV? (This eneryv6ii1g:md i/ gy is not in the relativistic region.)

Correct Answer:    

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

Correct Answer:    

Mark Problem
64#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The electron of a hydrogen atom makes a transition from the n = 5 state to thec4w(jncr-,b9leitcl2-+l7ty :ul lr9*me lq n = 2 state. Wh wclrn2l rel9(lu 4*y 9j-tc:b -,qmlit c+7leat is the wavelength of the emitted photon?

Correct Answer:    

Mark Problem
65#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The binding energy of the hydrogen atom in its ground stiz//g ;ys6 qbaate is -13.6 eV. What is the energy when it is in the n = 5 state/ y ;bg/qzia6s?

Correct Answer:    

Mark Problem
66#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A hydrogen atom in the ground state absorbs a photon of energy 12.09 eV. To whixzf+0z 2qfho9j ny21jch state f z+h0fzx9yjjo2 21q nwill the electron make a transition?

Correct Answer:    

Mark Problem
67#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the ionization energy of the neutral hydrog2o: / mufzvlqyas +d)a.*z :vjen atom?

Correct Answer:    

Mark Problem
68#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the ionization enqoa r 3dlygu v:-i6d5: *.ksxlergy of singly ionized helium?

Correct Answer:    

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 hydr sq,tf /qewfra7q-3f5u7p4 z xzitu-)ogen atom must

Correct Answer:    

Mark Problem
70#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In state n = 1, the energy of the lc0uk 6ks;3:qmln feii ox85 -hydrogen atom is -13.58 eV. What is its energy in ;s0fqulc3:ei 58-il6knkm xo state n = 2?

Correct Answer:    

Mark Problem
71#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The wavelength of a ruby laser is 694.3 nm. What is the ene jtsu5 ulqsd.871xt2r0bg 3z rrgy difference between the two energy states involxzju8u sl0rd2 qs 1tt7gr5.3bved in laser action?

Correct Answer:    

Mark Problem
72#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An electron is moving about a single proton in an orbit characteri/ cx1yrbk6/. .jcuy. -lvimeudmy;p1zed by n = 4. How many of the electron's de Broglie wavelengths fit into the cily mvbk/i..cur e6c; yj1y.1d-mx/up rcumference of this orbit?

Correct Answer:    

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