Physics Unit29: Molecules and Solids

?作业考试练习?通用国际物理?Physics Unit29: Molecules and Solids

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习题练习：Physics Unit29: Molecules and Solids

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作者: admin 发布日期: 2023-05-01 13:57 总分: 27分得分: _____________

答题人: 匿名未登录开始时间: 23年05月01日 13:57 切换到: 整卷模式

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

Covalent bonding is :+n9d dxsa uh0kw ;hem;zy-: wcaused by

A. the sharing of electrons between atoms.

B. the transfer of electrons between atoms.

C. unequal charge distributions around neutral molecules.

D. atoms bonding to hydrogen molecules.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

Ionic bonding is caused fk3* wz 9j z5w5hm,fjoby

A. the sharing of electrons between atoms.

B. the transfer of electrons between atoms.

C. unequal charge distributions around neutral molecules.

D. atoms bonding to hydrogen molecules.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

The bond energy for a hydrogen molezdr+jcj93)olk , fev 6cule is

A. $2.5 \; eV$

B. $3.5 \; eV$

C. $4.5 \; eV$

D. $5.5 \; eV$

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

Van der Waals bonding is cew; +xq)o gj d6 yjy;z;ei9bi/aused by

A. the sharing of electrons between atoms.

B. the transfer of electrons between atoms.

C. unequal charge distribution around neutral molecules.

D. atoms bonding to hydrogen molecules.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

In general, which of the following is the strongest bond?k1h faszyqnx )jo z+9yl 3r)6-

A. hydrogen bond

B. van der Waals bond

C. ionic bond

D. covalent bond

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

In general, which of the following ;d / sq r--(p toll an1yy).:l3mdyaunis the weakest bond?

A. hydrogen bond

B. van der Waals bond

C. ionic bond

D. covalent bond

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

For a diatomic quantum mechanical rotator, the energy difference between adjabmv wtlo-e u+ x4fjrs+9f5 *7rcent energy levebf9f re*+4m-jw 5l7uv+oxtsrls

A. increases as L increases.

B. decreases as L increases.

C. is constant for all L.

D. varies randomly as L increases.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diatomic quantum mechanical rotator in the ;;epi8pa too/L = 1 quantum state has energy E. The same rotator in the L = 2 quantum stataeop; ti p/;o8e will have energy

A. 2E.

B. 3E.

C. 6E.

D. none of the given answers

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

In its lowest quantum state, the energy of yyre2v2 .aisla5bw (-a diatomic harmonic oscillator is

A. (1/4)hf.

B. (1/2)hf.

C. hf.

D. (3/2)hf.

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

For a diatomic quantum mechanical vibrator, the energy difference betwee72e;:ttuas: ;ou. v*mtxkdqnh: f 7f tkd3v6yn adjace27f q :ymnuxdhsvo3.tfta: tek:t ;6k7dvu;* nt quantum states

A. increases as v increases.

B. decreases as v increases.

C. is constant for all values of v.

D. varies randomly as v increases.

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In its lowest quantum state, a dil auo/lxc 6t/v1 .o9fnph1w ,vatomic quantum mechanical rotator has a rotatioc v/vxuoa1np.ft how,l 1l/6 9nal energy of

A. zero.

B. $h/2 \pi I$.

C. $h/\pi I$.

D. none of the given answers

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diatomic quantum mechanical vibr2ddhsq4.9z 0tk ab4 byator in its ground state has energy E. This same vibrator ina yht9q2z0b4 k sd.db4 its third state has energy

A. E.

B. 3E.

C. 5E.

D. 7E.

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Metallic bonding is causu0bp6uwd)1k ;7(lwvxo6 crxc ed by

A. the sharing of electrons by all atoms.

B. the transfer of electrons between atoms.

C. unequal charge distributions around neutral molecules.

D. atoms bonding to hydrogen molecules.

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a good conductor, the highest enerx;wja q7w dh hq26y myd-s(nqh4e99-tgy band containing electrons is

A. only partially filled.

B. completely filled.

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a good insulator, the highest energy band containing electrons, calln b.z jjp9.rym ;.+stu99r ctls(r8efed the valence sern9r pjb+ j8z;9lt9f mcr.y t(su. .band, is

A. only partially filled.

B. completely filled.

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An n-type semiconductor is produced by7b.u9d0 m x(lgsowd1d

A. doping the host crystal with donor impurities.

B. doping the host crystal with accepter impurities.

C. pure crystals of germanium.

D. none of the given answers

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A p-type semiconductor is s+xuxq, +m:yvproduced by

A. doping the host crystal with donor impurities.

B. doping the host crystal with accepter impurities.

C. pure crystals of germanium.

D. none of the given answers

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a p-type semicondu4ihzgrxy tpp2/b 94y- j;wh5 uu52gotctor, a hole is

A. a donor atom.

B. an extra electron supplied by a donor atom.

C. a missing atom in the crystalline structure.

D. a region where an electron is missing.

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19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When a voltage is applied pnclxea 2 o6ixsd2;:xkma91.across a p-type semiconductor, the holes

A. are destroyed.

B. move toward the positive electrode.

C. move toward the negative electrode.

D. do not move.

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20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If a battery is connected to a diode with the positive terminal to the p s,1t 5kqtlx r)0kj+n9 ewka 1zwide and the negative t+5a90t) lz,kw1rnj1k ekwxq terminal to the n side, then diode is said to be

A. forward biased.

B. reversed biased.

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21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A simple junction transisto9) xizcc9/)l ofnm2 hur consists of three semiconductor sections consistingz/un9m fc9) c2hl)ox i of

A. pnp semiconductors.

B. npn semiconductors.

C. either pnp or npn semiconductors.

D. none of the given answers

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22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diatomic quantum mechanical oscillator has a moment w74 k;6sel chbof inertia of $7.73 \times 10^{-45} \; kg \cdot m^{2}$. What is the rotational energy in the quantum state characterized by L = 2?

A. $2.27 \times 10^{-5} \; eV$

B. $2.72 \times 10^{-5} \; eV$

C. $7.22 \times 10^{-5} \; eV$

D. $8.71 \times 10^{-5} \; eV$

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23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diatomic molecule has 4xa9yvi;ark ;9 i lt6l:wiab5$2.6 \times 10^{-5} \; eV$ of rotational energy in the L = 2 quantum state. What is the rotational energy in the L = 1 quantum state?

A. $3.4 \times 10^{-6} \; eV$

B. $5.3 \times 10^{-6} \; eV$

C. $7.8 \times 10^{-6} \; eV$

D. $8.7 \times 10^{-6} \; eV$

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24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diatomic molecule ha ut/ 4ydx(v*zw s2nh isz1k+7ps $18 \times 10^{-5} \; eV$ of rotational energy in the L = 2 quantum state. What is the rotational energy in the L = 0 quantum state?

A. $9.0 \times 10^{-5} \; eV$

B. $6.0 \times 10^{-5} \; eV$

C. $3.0 \times 10^{-5} \; eV$

D. $0 \; eV$

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25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Estimate the rotational en;pxe w 4fgwc7*ergy (in eV) for a diatomic hydrogen molecule in the L = 2 quantum state. (The equilibrium separation for thee cgf7xww*;4 p H2 molecule is 0.075 nm.)

A. $0.011 \; eV$

B. $0.022 \; eV$

C. $0.033 \; eV$

D. $0.044 \; eV$

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26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diatomic molecule is vypg(v5b 6tz 0iibrating in the v = 1 quantum state with a frequency of gz ti5y0(pvb 6$2.0 \times 10^{13} \; Hz$. What is the energy of vibration?

A. $0.041 \; eV$

B. $0.083 \; eV$

C. $0.12 \; eV$

D. $0.17 \; eV$

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27#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The energy gap between the valence and conduction bands in a certain semiconduczdrm6j8c:u h;r mrwockrv -(l700 i6o tor is 1.25 eV. What is the threu 0h6zcwrko 6c8-:;j r r7omv(i0l mrdshold wavelength for optical absorption in this substance?

A. $599 \; nm$

B. $959 \; nm$

C. $873 \; nm$

D. $995 \; nm$

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总分:27分及格:16.2分时间:不限时

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