課程名稱︰普通物理甲下
課程性質︰必修
課程教師︰林敏聰
開課學院：理學院
開課系所︰物理系
考試日期（年月日）︰2008.04.17
考試時限（分鐘）：4小時左右吧
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1.Please give an "intuitive" explanation for the formation of the energy band
in the electronic structure of the solid state.(5%)
2.Please describe and explain the three different conduction behavior in
conductor, insulator, and semiconductor by using the concept of the energy
band.(9%) How is the temperature dependence of the conductivity for each type
？(6%) Why？(5%)
3.Consider an electri dipole, with moment p along positive z direction, at the
origin. What is the electric field at (0, 0, z), and (x, 0, 0)？ Please
specify both the magnitude and direction.(10%)
4.Dipole layer can be used to modify the work function of a metal surface.
Consider a metallic sphere of radius R, coated with one molecular layer such
that electrons are transferred from metal to molecules a little bit. Assume the
total charge transferred is Q and the effective separation between the
bi-layer is d, how much will the work function of the metal surface be
modified？(15%)
5.Consider an irregular metal surface. Please explain why the surface with
smaller radius of curvature has larger electric field nearby.(10%)
6.A particle of rest mass m0 approaches head-on another particle of mass m0,
each moving with velocity 3c/4. Calculate (a) the relativistic velocity, (b)
the relativistic mass of each particle with respect to each other.(20%)
7.Show that the relativistic momentum of a particle may be written as p=
[(2E0K+K^2)^1/2]/c.
What is the value of p for (a) β→0, (b) β→1？(20%)
8. Good luck!!!!(Total 100%)
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結果固然重要
但過程往往比結果更重要
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※ 編輯: raintiny 來自: 140.112.220.233 (04/17 13:00)