Chapter 40
Three de Broglie waves are shown for particles of equal mass. Rank in order, from largest to smallest, the speeds of particles a, b, and c.
1. va = vb > vc 2. vb > va > vc 3. vb > va = vc 4. vc > va > vb 5. vc > va = vb
Three de Broglie waves are shown for particles of equal mass. Rank in order, from largest to smallest, the speeds of particles a, b, and c.
1. va = vb > vc 2. vb > va > vc 3. vb > va = vc 4. vc > va > vb 5. vc > va = vb
A particle in a rigid box in the n = 2 stationary state is most likely to be found
1. One-quarter of the way from either end.2. One-third of the way from either end.3. In the center of the box.4. It is equally likely to be found at any point
in the box.
A particle in a rigid box in the n = 2 stationary state is most likely to be found
1. One-quarter of the way from either end.2. One-third of the way from either end.3. In the center of the box.4. It is equally likely to be found at any point
in the box.
This is a wave function for a particle in a finite quantum well. What is the particle’s quantum number?
1. n = 1 2. n = 2 3. n = 3 4. n = 4 5. n = 5
This is a wave function for a particle in a finite quantum well. What is the particle’s quantum number?
1. n = 1 2. n = 2 3. n = 3 4. n = 4 5. n = 5
For which potential energy is this an appropriate n = 4 wave function?
(1) (2) (3) (4)
For which potential energy is this an appropriate n = 4 wave function?
(1) (2) (3) (4)
Which probability density represents a quantum
harmonic oscillator with
1. a2. b3. c4. d
Which probability density represents a quantum
harmonic oscillator with
1. a2. b3. c4. d
1. Decreases.2. Increases.3. Does not change.
A particle with energy E approaches an energy barrier with height U0 > E. If U0 is slowly decreased, the probability that the particle reflects from the barrier
1. Decreases.2. Increases.3. Does not change.
A particle with energy E approaches an energy barrier with height U0 > E. If U0 is slowly decreased, the probability that the particle reflects from the barrier
Chapter 40 Reading Quiz
A quantum particle can pass through a region of space that would be forbidden to a classical particle. What is the name of this process?
1. Teleportation2. Vacuum decay3. Lasing4. Trapping5. Tunneling
A quantum particle can pass through a region of space that would be forbidden to a classical particle. What is the name of this process?
1. Teleportation2. Vacuum decay3. Lasing4. Trapping5. Tunneling
A particle in the ground state of a potential energy well
1. is at rest.2. has a zero-point motion.3. is equally probable to be found at any point
inside the well.4. has a wave function that is zero at all points.5. has zero energy.
A particle in the ground state of a potential energy well
1. is at rest.2. has a zero-point motion.3. is equally probable to be found at any point
inside the well.4. has a wave function that is zero at all points.5. has zero energy.
Which of these was not analyzed in this chapter?
1. A particle in a capacitor2. A particle in a finite potential well3. A neutron in a nucleus4. An electron in an atom5. An electron in a quantum-well device
Which of these was not analyzed in this chapter?
1. A particle in a capacitor2. A particle in a finite potential well3. A neutron in a nucleus4. An electron in an atom5. An electron in a quantum-well device
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