Question 1

For a particle in a one-dimensional box, what happens to the ground-state energy if the width of the box is halved?

Accepted Answer

A)  nothing, it stays the same 
B)  it doubles 
C)  it halves 
D)  it quadruples 
E)  it quarters 
A)  nothing, it stays the same 
B)  it doubles 
C)  it halves 
D)  it quadruples 
E)  it quarters

Question 2

The word laser is an acronym for

Accepted Answer

A)  light amplification by stimulated emission of radiation. 
B)  lighting by advanced showers of energetic rays. 
C)  local atomic spectroscopy for emission and ranging. 
D)  loop axial staged emergence radiometer. 
E)  large area scanning electron repeater. 
A)  light amplification by stimulated emission of radiation. 
B)  lighting by advanced showers of energetic rays. 
C)  local atomic spectroscopy for emission and ranging. 
D)  loop axial staged emergence radiometer. 
E)  large area scanning electron repeater.

Question 3

Which of the following demonstrates the wave properties of light?

Accepted Answer

A)  photoelectric effect 
B)  Compton effect 
C)  diffraction 
D)  pair production 
A)  photoelectric effect 
B)  Compton effect 
C)  diffraction 
D)  pair production

Question 4

The statistical interpretation of the wave function originated with

Accepted Answer

A)  Max Born. 
B)  Niels Bohr. 
C)  Albert Einstein. 
D)  Erwin Schrödinger. 
E)  Max Planck. 
A)  Max Born. 
B)  Niels Bohr. 
C)  Albert Einstein. 
D)  Erwin Schrödinger. 
E)  Max Planck.

Question 5

If the momentum of a particle is doubled, what happens to its de Broglie wavelength?

Accepted Answer

A)  It doubles. 
B)  It halves. 
C)  It slightly more than doubles. 
D)  It becomes slightly less than half. 
E)  It decreases by a factor of 2−1/2. 
A)  It doubles. 
B)  It halves. 
C)  It slightly more than doubles. 
D)  It becomes slightly less than half. 
E)  It decreases by a factor of 2−1/2.

Question 6

What is the de Broglie wavelength of a neutron with kinetic energy 44.0 keV? The mass of a neutron is 939.6 MeV/c2.

Accepted Answer

A)  56.4 pm 
B)  0.136 pm 
C)  0.166 pm 
D)  2.83 pm 
E)  5.11 pm 
A)  56.4 pm 
B)  0.136 pm 
C)  0.166 pm 
D)  2.83 pm 
E)  5.11 pm

Question 7

Alkali metals have how many electrons past the noble gas configuration?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 8

In the Bohr model of the hydrogen atom, how is the circumference Cn of the nth orbit of the electron related to the de Broglie wavelength λn of the electron?

Accepted Answer

A)  λn = Cn 
B)  λn = Cn/n 
C)  λn = nCn 
D)  λn = Cn/n2 
E)  λn = Cn/2π 
A)  λn = Cn 
B)  λn = Cn/n 
C)  λn = nCn 
D)  λn = Cn/n2 
E)  λn = Cn/2π

Question 9

The configuration 1s22s22p63s23p1 is for what element?

Accepted Answer

A)  B 
B)  F 
C)  Ne 
D)  Al 
E)  Cr 
A)  B 
B)  F 
C)  Ne 
D)  Al 
E)  Cr

Question 10

Which of the following demonstrates the particle properties of light?

Accepted Answer

A)  diffraction 
B)  interference 
C)  photoelectric effect 
D)  refraction 
A)  diffraction 
B)  interference 
C)  photoelectric effect 
D)  refraction

Question 11

Excited atomic states that last for a relatively long time are called

Accepted Answer

A)  laser states. 
B)  metastable states. 
C)  amplification states. 
D)  radiation states. 
E)  cascading states. 
A)  laser states. 
B)  metastable states. 
C)  amplification states. 
D)  radiation states. 
E)  cascading states.

Question 12

An electron and a neutron have the same de Broglie wavelength. Which statement is true?

Accepted Answer

A)  The electron and neutron have the same kinetic energy, but the electron has the higher speed. 
B)  The neutron has more kinetic energy but the two have the same speed. 
C)  The electron has more kinetic energy and a higher speed. 
D)  The electron has less kinetic energy and a lower speed. 
E)  The electron has less kinetic energy but a higher speed. 
A)  The electron and neutron have the same kinetic energy, but the electron has the higher speed. 
B)  The neutron has more kinetic energy but the two have the same speed. 
C)  The electron has more kinetic energy and a higher speed. 
D)  The electron has less kinetic energy and a lower speed. 
E)  The electron has less kinetic energy but a higher speed.

Question 13

The uncertainty principle was formulated by

Accepted Answer

A)  Albert Einstein. 
B)  Niels Bohr. 
C)  Werner Heisenberg. 
D)  Max Planck. 
E)  Paul Dirac. 
A)  Albert Einstein. 
B)  Niels Bohr. 
C)  Werner Heisenberg. 
D)  Max Planck. 
E)  Paul Dirac.

Exam 28: Quantum Physics

For a particle in a one-dimensional box, what happens to the ground-state energy if the width of the box is halved?

The word laser is an acronym for

Which of the following demonstrates the wave properties of light?

The statistical interpretation of the wave function originated with

If the momentum of a particle is doubled, what happens to its de Broglie wavelength?

What is the de Broglie wavelength of a neutron with kinetic energy 44.0 keV? The mass of a neutron is 939.6 MeV/c2.

Alkali metals have how many electrons past the noble gas configuration?

In the Bohr model of the hydrogen atom, how is the circumference Cn of the nth orbit of the electron related to the de Broglie wavelength λn of the electron?

The configuration 1s22s22p63s23p1 is for what element?

Which of the following demonstrates the particle properties of light?

Excited atomic states that last for a relatively long time are called

An electron and a neutron have the same de Broglie wavelength. Which statement is true?

The uncertainty principle was formulated by

Introduction

Motion Along a Line

Motion in a Plane

Force and Newtons Laws of Motion

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Nuclear Physics

Particle Physics

Filters

What is the de Broglie wavelength of a neutron with kinetic energy 44.0 keV? The mass of a neutron is 939.6 MeV/c².

In the Bohr model of the hydrogen atom, how is the circumference C_n of the n^th orbit of the electron related to the de Broglie wavelength λ_n of the electron?

The configuration 1s²2s²2p⁶3s²3p¹ is for what element?