Question 1

When light strikes the p-type semiconductor in a pn junction solar cell,

Accepted Answer

A)  only free electrons are created. 
B)  only positive holes are created. 
C)  both electrons and holes are created. 
D)  positive protons are created. 
E)  None of these is correct. 
A)  only free electrons are created. 
B)  only positive holes are created. 
C)  both electrons and holes are created. 
D)  positive protons are created. 
E)  None of these is correct.

Question 2

Use the following to answer the next question.
 
-At what energy is the Fermi factor equal to 0.1 for magnesium at T = 300 K?

Accepted Answer

A)  7.08 eV 
B)  7.17 eV 
C)  7.05 eV 
D)  7.02 eV 
E)  7.18 eV 
A)  7.08 eV 
B)  7.17 eV 
C)  7.05 eV 
D)  7.02 eV 
E)  7.18 eV

Question 3

Which of the following statements is false?

Accepted Answer

A)  The behavior of free electrons in a metal is very different from the behavior of the molecules in an ordinary gas. 
B)  Ordinary gas molecules are described by the classical Maxwell-Boltzmann energy distribution function. 
C)  The main features of a Fermi electron gas can be understood by assuming an electron in a metal to be a particle in a box. 
D)  No two electrons in an atom can be in the same quantum state. 
E)  None of these is false. 
A)  The behavior of free electrons in a metal is very different from the behavior of the molecules in an ordinary gas. 
B)  Ordinary gas molecules are described by the classical Maxwell-Boltzmann energy distribution function. 
C)  The main features of a Fermi electron gas can be understood by assuming an electron in a metal to be a particle in a box. 
D)  No two electrons in an atom can be in the same quantum state. 
E)  None of these is false.

When light strikes the p-type semiconductor in a pn junction solar cell,

Use the following to answer the next question. -At what energy is the Fermi factor equal to 0.1 for magnesium at T = 300 K?

Which of the following statements is false?

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

Exam 18: Solids and the Theory of Conduction

When light strikes the p-type semiconductor in a pn junction solar cell,

Use the following to answer the next question. -At what energy is the Fermi factor equal to 0.1 for magnesium at T = 300 K?

Which of the following statements is false?

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters