Physics Unit29: Molecules and Solids - 51fly国际课程 (51fly.win)

?作业考试练习?国际高中通用物理?Physics Unit29: Molecules and Solids

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习题练习：Physics Unit29: Molecules and Solids

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

答题人: 游客未登录开始时间: 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 ca0r4bee aa/w :sused 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/n0 bkeg9pcp . r,h i+7aa9hggh+cy-b 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

The bond energy for a hydrogen molecule i(da +(mw pkfatij 9:v(emc)-f s

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 jbz) 4 9uqfooc 6,qop,is caused 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 strr,fgvix .6xaf; -foytq (2w8 aongest 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

In general, which of tydl9 s gs /eye59iv by,lj+()jhe following is 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)m/q 7+jm/dey yc)yev difference between adjacent edcm )yj/+e q)/vyye7 mnergy levels

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 rotator3 nhpv/. q,q;sj-jsk l in the L = 1 quantum state has energy E. The same rotator in the L = 2 quantum stn-kjv.3/s,; lhq sqjpate 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 a diatomiczr6qgg 5 wvvcg;5 e8r1 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, t/3*o6d7j1qqq 1gx ;3 8cbucr qxdi ywwhe energy difference between adjacent quantuq8; c11g3djcq o6x rdb3q*w qwy/7xium 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 diatomic quantum mechanical rotator has gn2lxv)mub(a;ks t.,v;nn a9 a rotation(g) s9;l t,m xkbvvnanun2 ;a.al 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 vibrator in atkju-ta /;/o its ground state has energy E. This same vibrator in a/-tj/aotk;u 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 cause.n 41rt,d b(f4wgok zsd 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 t*jb,lcjg2)w energy 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 y:v-hd4b4ewc6 8 ;aukg wfxv4krkr;+band containing electrons, called the valence ba a4vw6hdv;b-fgu84wk e; 4xk+crrk:ynd, 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 produv:r 3mxr54ldo ced 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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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A p-type semiconductol99r7fu y 6:uzjf wjn(q:q iv/r is produced 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 semiconductor, a hole cjre s.ph4 d+jl9 - 20clusfsk (th,h5is

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 across a p-typx/2u7g :fegjub0 ;ab we 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 5 uz9:vn(9.rwamx /pkoe6m 0 t5paz gnpositive terminal to the p side and the negative terminal to the n r5m(zpa9 6 unpoa. zwkn/09g :ve 5txmside, 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 transistor consists of three semiconductor sections consistiamp+)jh r2h j9ng o2+h)ha jr 9jpmf

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 of) e wah(sa2bt* 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 l *(c. yvq37aa4w)v8achiu yphas $2.6 \times 10^{-5} \; eV$ 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 hasg /ba87nyeps4 qw+ uim85 y)go $18 \times 10^{-5} \; eV$ 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 energy (i-9 7dtzj ,u*ow us u(2n;devh,ugz:kin eV) for a diatomic hydrogen molecule in the L = 2;,si(9,7du du-j gk huz ztoe*:u2wv n quantum state. (The equilibrium separation for the 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 is6xq 0.l-sbt1 cu0lxkv vibrating in the v = 1 quantum state with a frequency of u vckx. t60xb0q1l-sl$2.0 \times 10^{13} \; Hz$. 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 conduc0 ppd(v+ u5angw8ll6ition bands in a certain semiconductor is 1.25 eV. l5 p dv( u68w0+gpanil What is the threshold 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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