Physics Unit29: Molecules and Solids

A diatomic quantum mechanical rotator i9hk7xg 0 4c (-mx /no kqx4uzwgaf7p/ln the L = 1 quantum state has energy E. The same rotator in the L gpcu0(4l/aqog77k -wn x 9k/xzhmfx4 = 2 quantum state will have energy

A. 2E.

B. 3E.

C. 6E.

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

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In its lowest quantum sta j hv61/ bf8kftuv3zu7te, the energy of a diatomic harmonic oscillator is

A. (1/4)hf.

B. (1/2)hf.

C. hf.

D. (3/2)hf.

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

For a diatomic quantum m0gbizjgxv* 45echanical vibrator, the energy difference between adjacen54bgi zgxv *j0t 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.

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

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 m)ro ruly,.0 drechanical rotator has a rotational energy r uydl)r,.ro0 of

A. zero.

B. $h/2 \pi I$.

C. $h/\pi I$.

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

A diatomic quantum mechanical vibrator in its ground state ) 36//g 6 aecexarn gx7hyrfp8has energy E. This same vibrator in its /6ee/7a)xryrn3ga x fpc 8g6hthird state has energy

A. E.

B. 3E.

C. 5E.

D. 7E.

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

13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Metallic bonding is caused lqpwh 85*b 91ve-xnv)+bw 3qihhs9w h 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.

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

In a good conductor, the highest energy band contaithbv.ts hi:/ 01ghgq)ning electrons is

A. only partially filled.

B. completely filled.

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

15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a good insulator, the highest energyb* tk x4ijhu 0rn722s7eti:op band containing electrons, called the valence 0inte:7hus xtri o72*kp42bjband, is

A. only partially filled.

B. completely filled.

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

16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An n-type semiconductor is peey6s0 yw(2 y idcsg3*roduced 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

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 p-type semiconductor is pr )e2 w*wlpcbt:ut7;lc6 5f 5sctdbco3 oduced 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

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

In a p-type semiconductor, a hole w* :)ehur9c ehvzv(4j2qa wwy* 8xn.nis

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.

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

When a voltage is applied across a p-type semiconductor, the ho u kt+:lvs2/5l7ig yvqles

A. are destroyed.

B. move toward the positive electrode.

C. move toward the negative electrode.

D. do not move.

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

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 sixuf 00e,q yls2f37ol;9isjmt de and the negative terminal to thes0feut ,3jyxiq9 f7s20;olm l n side, then diode is said to be

A. forward biased.

B. reversed biased.

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

A simple junction transistor consists of three semiconductor sections consi ; aueu*h6q0x)p0oq6vrqz 9wy sting o y6vwp 6;hzq9*e0u qquorax)0f

A. pnp semiconductors.

B. npn semiconductors.

C. either pnp or npn semiconductors.

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

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 i go lr.tg;0/nznertia 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. $8.71 \times 10^{-5} \; eV$

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

A diatomic molecule 9tm p;b,atr5bd. m7hghas $2.6 \times 10^{-5} \; eV$ 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. $8.7 \times 10^{-6} \; eV$

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

A diatomic molecule hhd-trc ,4 asih,5x:esas $18 \times 10^{-5} \; eV$ 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. $0 \; eV$

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

Estimate the rotational energy (in eV) for a aaxz, (; mt*twdiatomic hydrogen molecule in the L = 2 quantum state. (The equilibrium separation ax ,*t a;(tmwzfor the H2 molecule is 0.075 nm.)

A. $0.011 \; eV$

B. $0.022 \; eV$

C. $0.033 \; eV$

D. $0.044 \; eV$

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

26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A diatomic molecule is vibrating in the v = 1 quantum state with a o:p;l2 s.)b9h vri)6) fka rg7js mvk1fefxz/frequency of 6) )prj vxfg2sv/o 9 h1izksa b;e.m )krfl:f7$2.0 \times 10^{13} \; Hz$. What is the energy of vibration?

A. $0.041 \; eV$

B. $0.083 \; eV$

C. $0.12 \; eV$

D. $0.17 \; eV$

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

The energy gap between the valence andrr:5q)k divm- conduction bands in a certain semiconductor is 1.25 eV. What is the threshold wai)qk5: d vrm-rvelength for optical absorption in this substance?

A. $599 \; nm$

B. $959 \; nm$

C. $873 \; nm$

D. $995 \; nm$

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

答题人:

总分:27分及格:16.2分时间:不限时

未答题:

已答题:0

答错题:

当前第题，此次习题练习共有 27 道题

本系统支持习题练习，作业与考试三大模式，作业考试自动评分，成绩排序一键导出，可设定动态变量同一试卷千人千题
如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

浏览记录|使用帮助|手机版|切到手机版|题库网 (https://tiku.one)

GMT+8, 2024-7-9 06:17 , Processed in 0.195617 second(s), 75 queries , Redis On.

返回顶部

账号		自动登录	找回密码
密码			立即注册