In the Compton scattering experiment shown in the figure, a monochromatic beam of X-rays strikes a target containing free electrons. Scattered X-rays are detected with a wavelength of 2.50 × 10-12 m at an angle of 45° away from the original beam direction. What is the wavelength of the incident monochromatic X-rays? Note: The mass of an electron is 9.11 × 10-31 kg.

A) 3.21 × 10-12 m B) 2.86 × 10-12 m C) 2.50 × 10-12 m D) 2.03 × 10-12 m E) 1.79 × 10-12 m A) 3.21 × 10-12 m B) 2.86 × 10-12 m C) 2.50 × 10-12 m D) 2.03 × 10-12 m E) 1.79 × 10-12 m

A laser emits photons of energy 5.0 eV with a power of 10-2 W. How many photons are emitted each second?

A) 4.0 × 1014 B) 2.7 × 1015 C) 5.0 × 1018 D) 3.1 × 1021 E) 2.5 × 1021 A) 4.0 × 1014 B) 2.7 × 1015 C) 5.0 × 1018 D) 3.1 × 1021 E) 2.5 × 1021

It is desired to obtain a diffraction pattern for electrons using a diffraction grating with lines separated by 10 nm. The mass of an electron is 9.11 × 10S1U1P1-S1S1P0S1U1P131S1S1P0 kg. -What is the approximate kinetic energy of electrons that would be diffracted by such a grating?

A) 1.5 × 10-6 eV B) 1.5 × 10-4 eV C) 1.5 × 10-2 eV D) 1.5 × 102 eV E) 1.5 × 108 eV A) 1.5 × 10-6 eV B) 1.5 × 10-4 eV C) 1.5 × 10-2 eV D) 1.5 × 102 eV E) 1.5 × 108 eV

A proton (mp = 1.673 × 10-27 kg) and an electron (me = 9.109 × 10-31 kg) are confined such that the x position of each is known to within 1.50 × 10-10 m. What is the ratio of the minimum uncertainty in the x component of the velocity of the electron to that of the proton, $\Delta$ve/$\Delta$vp?

A) 5.444 × 10-4 B) 0.2272 C) 808.2 D) 1837 E) 36 290 A) 5.444 × 10-4 B) 0.2272 C) 808.2 D) 1837 E) 36 290

The position of a hydrogen atom (m = 1.7 × 10-27 kg) is known to within 2.0 × 10-6 m. What is the minimum uncertainty in the atom's velocity?

A) zero m/s B) 0.0085 m/s C) 0.011 m/s D) 0.016 m/s E) 0.031 m/s A) zero m/s B) 0.0085 m/s C) 0.011 m/s D) 0.016 m/s E) 0.031 m/s

Exam 29: Particles and Waves

A beam of electrons is incident on a single slit that has a width of 1.00 × 10^-⁶ m and a diffraction pattern is observed on a screen located 15.0 m from the slit. The momentum of an individual electron in the beam is 5.91 × 10^-²⁴ kg . m/s. What is the width of the central maximum fringe?

Free

(Multiple Choice)

4.8/5

(35)

Question 1

Correct Answer:

Verified

Photons of what minimum frequency are required to remove electrons from gold? Note: The work function for gold is 4.8 eV.

Free

(Multiple Choice)

4.9/5

(32)

Question 2

Correct Answer:

Verified

What happens to the de Broglie wavelength of an electron if its momentum is reduced to one-half of its initial value?

Free

(Multiple Choice)

4.8/5

(32)

Question 3

Correct Answer:

Verified

The position of a 1-g object moving in the x direction at 1 cm/s is known to within ± 10 nm. In which range is the fractional uncertainty, ( $\Delta$ p_x)/p_x , in the x component of its momentum?

(Multiple Choice)

4.8/5

(32)

Question 4

In the Compton scattering experiment shown in the figure, a monochromatic beam of X-rays strikes a target containing free electrons. Scattered X-rays are detected with a wavelength of 2.50 × 10^-¹² m at an angle of 45° away from the original beam direction. What is the wavelength of the incident monochromatic X-rays? Note: The mass of an electron is 9.11 × 10^-³¹ kg.

(Multiple Choice)

4.8/5

(32)

Question 5

A laser emits photons of energy 5.0 eV with a power of 10^-² W. How many photons are emitted each second?

(Multiple Choice)

4.8/5

(35)

Question 6

It is desired to obtain a diffraction pattern for electrons using a diffraction grating with lines separated by 10 nm. The mass of an electron is 9.11 × 10^-³¹ kg. -What is the approximate kinetic energy of electrons that would be diffracted by such a grating?

(Multiple Choice)

4.7/5

(30)

Question 7

Complete the following statement: According to the de Broglie relation, the wavelength of a "matter" wave is inversely proportional to

(Multiple Choice)

4.8/5

(35)

Question 8

Which one of the following statements concerning photons is false?

(Multiple Choice)

4.8/5

(31)

Question 9

A laser emits a 5.0 × 10³-J pulse of light that has a wavelength of 480 nm. Determine the number of photons in the pulse.

(Multiple Choice)

4.9/5

(36)

Question 10

Photons of energy 5.0 eV strike a metal surface that has a work function of 3.5 eV. Determine which one of the following best describes the kinetic energy of the emitted electrons.

(Multiple Choice)

4.8/5

(38)

Question 11

Complete the following statement: The photon or "particle" theory of electromagnetic radiation is necessary to explain the

(Multiple Choice)

4.8/5

(38)

Question 12

A laser produces 3.0 W of light that has a wavelength of 600 nm. How many photons per second are produced?

(Multiple Choice)

4.8/5

(28)

Question 13

A digital wireless telephone communicates to a base via microwaves with a frequency of 1930 MHz. What are the momentum and energy for the microwave photons emitted by the telephone?

(Multiple Choice)

4.8/5

(26)

Question 14

Upon which one of the following parameters does the energy of a photon depend?

(Multiple Choice)

4.9/5

(33)

Question 15

The x component of the velocity of an electron (m = 9.11 × 10^-³¹ kg) is known to be between 100 m/s and 300 m/s. Which one of the following is a true statement concerning the uncertainty in the x coordinate of the electron?

(Multiple Choice)

4.9/5

(33)

Question 16

Which one of the following quantities is the same for all photons in vacuum?

(Multiple Choice)

4.9/5

(24)

Question 17

A proton (m_p = 1.673 × 10^-²⁷ kg) and an electron (m_e = 9.109 × 10^-³¹ kg) are confined such that the x position of each is known to within 1.50 × 10^-¹⁰ m. What is the ratio of the minimum uncertainty in the x component of the velocity of the electron to that of the proton, $\Delta$ v_e/ $\Delta$ v_p?

(Multiple Choice)

4.9/5

(35)

Question 18

When ultraviolet photons with a wavelength of 3.45 × 10^-⁷ m are directed at the surface of an unknown metal in vacuum, electrons with a maximum kinetic energy of 1.52 eV are emitted from the surface. What is the work function of the metal?

(Multiple Choice)

4.8/5

(43)

Question 19

The position of a hydrogen atom (m = 1.7 × 10^-²⁷ kg) is known to within 2.0 × 10^-⁶ m. What is the minimum uncertainty in the atom's velocity?

(Multiple Choice)

4.9/5

(40)

Question 20

Showing 1 - 20 of 54

Exam 29: Particles and Waves

A beam of electrons is incident on a single slit that has a width of 1.00 × 10-6 m and a diffraction pattern is observed on a screen located 15.0 m from the slit. The momentum of an individual electron in the beam is 5.91 × 10-24 kg . m/s. What is the width of the central maximum fringe?

Photons of what minimum frequency are required to remove electrons from gold? Note: The work function for gold is 4.8 eV.

What happens to the de Broglie wavelength of an electron if its momentum is reduced to one-half of its initial value?

The position of a 1-g object moving in the x direction at 1 cm/s is known to within ± 10 nm. In which range is the fractional uncertainty, ( Δ\DeltaΔ px)/px , in the x component of its momentum?

A laser emits photons of energy 5.0 eV with a power of 10-2 W. How many photons are emitted each second?

It is desired to obtain a diffraction pattern for electrons using a diffraction grating with lines separated by 10 nm. The mass of an electron is 9.11 × 10-31 kg. -What is the approximate kinetic energy of electrons that would be diffracted by such a grating?

Complete the following statement: According to the de Broglie relation, the wavelength of a "matter" wave is inversely proportional to

Which one of the following statements concerning photons is false?

A laser emits a 5.0 × 103-J pulse of light that has a wavelength of 480 nm. Determine the number of photons in the pulse.

Photons of energy 5.0 eV strike a metal surface that has a work function of 3.5 eV. Determine which one of the following best describes the kinetic energy of the emitted electrons.

Complete the following statement: The photon or "particle" theory of electromagnetic radiation is necessary to explain the

A laser produces 3.0 W of light that has a wavelength of 600 nm. How many photons per second are produced?

A digital wireless telephone communicates to a base via microwaves with a frequency of 1930 MHz. What are the momentum and energy for the microwave photons emitted by the telephone?

Upon which one of the following parameters does the energy of a photon depend?

The x component of the velocity of an electron (m = 9.11 × 10-31 kg) is known to be between 100 m/s and 300 m/s. Which one of the following is a true statement concerning the uncertainty in the x coordinate of the electron?

Which one of the following quantities is the same for all photons in vacuum?

When ultraviolet photons with a wavelength of 3.45 × 10-7 m are directed at the surface of an unknown metal in vacuum, electrons with a maximum kinetic energy of 1.52 eV are emitted from the surface. What is the work function of the metal?

The position of a hydrogen atom (m = 1.7 × 10-27 kg) is known to within 2.0 × 10-6 m. What is the minimum uncertainty in the atom's velocity?

Introduction and Mathematical Concepts

Kinematics in One Dimension

Kinematics in Two Dimensions

Forces and Newtons Laws of Motion

Dynamics of Uniform Circular Motion

Work and Energy

Impulse and Momentum

Rotational Kinematics

Rotational Dynamics

Simple Harmonic Motion and Elasticity

Fluids

Temperature and Heat

The Transfer of Heat

The Ideal Gas Law and Kinetic Theory

Thermodynamics

Waves and Sound

The Principle of Linear Superposition and Interference Phenomena

Electric Forces and Electric Fields

Electric Potential Energy and the Electric Potential

Electric Circuits

Magnetic Forces and Magnetic Fields

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

The Refl Ection of Light: Mirrors

The Refraction of Light: Lenses and Optical Instruments

Interference and the Wave Nature of Light

Special Relativity

The Nature of the Atom

Nuclear Physics and Radioactivity

Ionizing Radiation, Nuclear Energy, and Elementary Particles

Filters

A beam of electrons is incident on a single slit that has a width of 1.00 × 10^-⁶ m and a diffraction pattern is observed on a screen located 15.0 m from the slit. The momentum of an individual electron in the beam is 5.91 × 10^-²⁴ kg . m/s. What is the width of the central maximum fringe?

The position of a 1-g object moving in the x direction at 1 cm/s is known to within ± 10 nm. In which range is the fractional uncertainty, ( $\Delta$ p_x)/p_x , in the x component of its momentum?

A laser emits photons of energy 5.0 eV with a power of 10^-² W. How many photons are emitted each second?

It is desired to obtain a diffraction pattern for electrons using a diffraction grating with lines separated by 10 nm. The mass of an electron is 9.11 × 10^-³¹ kg. -What is the approximate kinetic energy of electrons that would be diffracted by such a grating?

A laser emits a 5.0 × 10³-J pulse of light that has a wavelength of 480 nm. Determine the number of photons in the pulse.

The x component of the velocity of an electron (m = 9.11 × 10^-³¹ kg) is known to be between 100 m/s and 300 m/s. Which one of the following is a true statement concerning the uncertainty in the x coordinate of the electron?

When ultraviolet photons with a wavelength of 3.45 × 10^-⁷ m are directed at the surface of an unknown metal in vacuum, electrons with a maximum kinetic energy of 1.52 eV are emitted from the surface. What is the work function of the metal?

The position of a hydrogen atom (m = 1.7 × 10^-²⁷ kg) is known to within 2.0 × 10^-⁶ m. What is the minimum uncertainty in the atom's velocity?