The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options: The charge-to-mass ratio was same for all materials. Cathode rays could move through a vacuum. Electrons were attracted toward a negatively charged plate. The charge was always 1.60 × 10 − 19 c o u l o m b .

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Answer 1

Question

Chapter 8, Problem 1AC

To determine

The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options:

The charge-to-mass ratio was same for all materials.

Cathode rays could move through a vacuum.

Electrons were attracted toward a negatively charged plate.

The charge was always 1.60 × 10−19 coulomb.

Expert Solution & Answer

Answer to Problem 1AC

Solution:

Option (a) is the correct answer.

Explanation of Solution

Introduction:

J.J Thomson performed an experiment of cathode rays and observed the green phosphorescence when these rays are passed under high magnetic and electric field in a high vacuum tube. This observation leads very interesting fact that the particles which comes out from the cathode rays were attracted towards the anode terminal or the positive terminal.

High vacuum tube filled with the inert gas provides the inert free medium for a particle to move inside the tube.

On the introduction of the magnetic field, the charge gets deflected. This is due to the magnetic force applied on the moving charge. This confirmed that the particle has some charge.

Explanation:

Reason for the correct option:

As the charge to the mass ratio of the particle is calculated. It is initially presumed it might depend upon the velocity of the particle or the intensity of the magnetic field. Thus, the velocity and magnetic field intensity also changed but the charge to mass ratio of the particle remains the same. This leads for the search of the source of the particle whether it is observed due to the gas filled inside the chamber or the cathode material. When both the material of the cathode and the gas filled was changed, then also the charge to the mass ratio remains unchanged.

This confirms the possibility subatomic particle which does not depend upon the material of the metal or cathode or the magnetic field. The charge to mass ratio of the particle will always remain constant for all materials.

Thus, the particle named as electron and its charge to mass ratio em is approximately equal to:

em=1.7×107

Hence option (a), is correct.

Reason for the incorrect options:

Cathode ray can travel through the vacuum but it does not infer that it is subatomic particle because energized particle or wave can also travel through vacuum. Hence, the option (b) is incorrect.

The attraction of the particle is towards the positively charged plate because electrons are negatively charged particles. Hence, the option (c) is incorrect.

Thomson found the charge-to-mass ratio of particle but not charge from the oil drop experiment. Hence, the option (d) is incorrect.

Conclusion:

The main evidence that convinced Thomson is that he had discovered a subatomic particle; the electron is the charge-to-mass ratio was the same for all materials.

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Students have asked these similar questions

Robert Millikan was an American physicist who in 1909 performed a classic experiment involving charged oil drops. Millikan adjusted the voltage applied between two metal plates in order to suspend charged drops in the resulting electric field. For a suspended drop, the electrostatic force directed up exactly balances out the weight of the drop. Millikan ultimately determined the charge on an electron and that charge is quantized. This means that charge comes in increments, discrete amounts, rather than any amount.A NEGATIVELY-charged oil drop is suspended between two plates of opposite charge by an electric field of 603 newtons per coulomb. The drop is determined to have a mass of 8.86 x 10-17 kilograms. a. What is the charge on the drop? Include units in your answer.

Robert Millikan was an American physicist who in 1909 performed a classic experiment involving charged oil drops. Millikan adjusted the voltage applied between two metal plates in order to suspend charged drops in the resulting electric field. For a suspended drop, the electrostatic force directed up exactly balances out the weight of the drop. Millikan ultimately determined the charge on an electron and that charge is quantized. This means that charge comes in increments, discrete amounts, rather than any amount.A NEGATIVELY-charged oil drop is suspended between two plates of opposite charge by an electric field of 603 newtons per coulomb. The drop is determined to have a mass of 8.86 x 10-17 kilograms.a. What is the charge on the drop? Include units in your answer. More information.b. How many excess electrons does it carry? Hint: Charge is quantized, so this answer must be just an integer.

An electron revolves around the nucleus of an atom in a circular orbit of radius 4.0Å with a speed of 6.0 x 10^6 ms-1. Calculate the linear kinetic energy.

Answer 2

Question

Chapter 8, Problem 1AC

To determine

The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options:

The charge-to-mass ratio was same for all materials.

Cathode rays could move through a vacuum.

Electrons were attracted toward a negatively charged plate.

The charge was always 1.60 × 10−19 coulomb.

Expert Solution & Answer

Answer to Problem 1AC

Solution:

Option (a) is the correct answer.

Explanation of Solution

Introduction:

J.J Thomson performed an experiment of cathode rays and observed the green phosphorescence when these rays are passed under high magnetic and electric field in a high vacuum tube. This observation leads very interesting fact that the particles which comes out from the cathode rays were attracted towards the anode terminal or the positive terminal.

High vacuum tube filled with the inert gas provides the inert free medium for a particle to move inside the tube.

On the introduction of the magnetic field, the charge gets deflected. This is due to the magnetic force applied on the moving charge. This confirmed that the particle has some charge.

Explanation:

Reason for the correct option:

As the charge to the mass ratio of the particle is calculated. It is initially presumed it might depend upon the velocity of the particle or the intensity of the magnetic field. Thus, the velocity and magnetic field intensity also changed but the charge to mass ratio of the particle remains the same. This leads for the search of the source of the particle whether it is observed due to the gas filled inside the chamber or the cathode material. When both the material of the cathode and the gas filled was changed, then also the charge to the mass ratio remains unchanged.

This confirms the possibility subatomic particle which does not depend upon the material of the metal or cathode or the magnetic field. The charge to mass ratio of the particle will always remain constant for all materials.

Thus, the particle named as electron and its charge to mass ratio em is approximately equal to:

em=1.7×107

Hence option (a), is correct.

Reason for the incorrect options:

Cathode ray can travel through the vacuum but it does not infer that it is subatomic particle because energized particle or wave can also travel through vacuum. Hence, the option (b) is incorrect.

The attraction of the particle is towards the positively charged plate because electrons are negatively charged particles. Hence, the option (c) is incorrect.

Thomson found the charge-to-mass ratio of particle but not charge from the oil drop experiment. Hence, the option (d) is incorrect.

Conclusion:

The main evidence that convinced Thomson is that he had discovered a subatomic particle; the electron is the charge-to-mass ratio was the same for all materials.

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Answer 3

Question

Chapter 8, Problem 1AC

To determine

The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options:

The charge-to-mass ratio was same for all materials.

Cathode rays could move through a vacuum.

Electrons were attracted toward a negatively charged plate.

The charge was always 1.60 × 10−19 coulomb.

Expert Solution & Answer

Answer to Problem 1AC

Solution:

Option (a) is the correct answer.

Explanation of Solution

Introduction:

J.J Thomson performed an experiment of cathode rays and observed the green phosphorescence when these rays are passed under high magnetic and electric field in a high vacuum tube. This observation leads very interesting fact that the particles which comes out from the cathode rays were attracted towards the anode terminal or the positive terminal.

High vacuum tube filled with the inert gas provides the inert free medium for a particle to move inside the tube.

On the introduction of the magnetic field, the charge gets deflected. This is due to the magnetic force applied on the moving charge. This confirmed that the particle has some charge.

Explanation:

Reason for the correct option:

As the charge to the mass ratio of the particle is calculated. It is initially presumed it might depend upon the velocity of the particle or the intensity of the magnetic field. Thus, the velocity and magnetic field intensity also changed but the charge to mass ratio of the particle remains the same. This leads for the search of the source of the particle whether it is observed due to the gas filled inside the chamber or the cathode material. When both the material of the cathode and the gas filled was changed, then also the charge to the mass ratio remains unchanged.

This confirms the possibility subatomic particle which does not depend upon the material of the metal or cathode or the magnetic field. The charge to mass ratio of the particle will always remain constant for all materials.

Thus, the particle named as electron and its charge to mass ratio em is approximately equal to:

em=1.7×107

Hence option (a), is correct.

Reason for the incorrect options:

Cathode ray can travel through the vacuum but it does not infer that it is subatomic particle because energized particle or wave can also travel through vacuum. Hence, the option (b) is incorrect.

The attraction of the particle is towards the positively charged plate because electrons are negatively charged particles. Hence, the option (c) is incorrect.

Thomson found the charge-to-mass ratio of particle but not charge from the oil drop experiment. Hence, the option (d) is incorrect.

Conclusion:

The main evidence that convinced Thomson is that he had discovered a subatomic particle; the electron is the charge-to-mass ratio was the same for all materials.

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Answer 4

Question

Chapter 8, Problem 1AC

To determine

The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options:

The charge-to-mass ratio was same for all materials.

Cathode rays could move through a vacuum.

Electrons were attracted toward a negatively charged plate.

The charge was always 1.60 × 10−19 coulomb.

Expert Solution & Answer

Answer to Problem 1AC

Solution:

Option (a) is the correct answer.

Explanation of Solution

Introduction:

J.J Thomson performed an experiment of cathode rays and observed the green phosphorescence when these rays are passed under high magnetic and electric field in a high vacuum tube. This observation leads very interesting fact that the particles which comes out from the cathode rays were attracted towards the anode terminal or the positive terminal.

High vacuum tube filled with the inert gas provides the inert free medium for a particle to move inside the tube.

On the introduction of the magnetic field, the charge gets deflected. This is due to the magnetic force applied on the moving charge. This confirmed that the particle has some charge.

Explanation:

Reason for the correct option:

As the charge to the mass ratio of the particle is calculated. It is initially presumed it might depend upon the velocity of the particle or the intensity of the magnetic field. Thus, the velocity and magnetic field intensity also changed but the charge to mass ratio of the particle remains the same. This leads for the search of the source of the particle whether it is observed due to the gas filled inside the chamber or the cathode material. When both the material of the cathode and the gas filled was changed, then also the charge to the mass ratio remains unchanged.

This confirms the possibility subatomic particle which does not depend upon the material of the metal or cathode or the magnetic field. The charge to mass ratio of the particle will always remain constant for all materials.

Thus, the particle named as electron and its charge to mass ratio em is approximately equal to:

em=1.7×107

Hence option (a), is correct.

Reason for the incorrect options:

Cathode ray can travel through the vacuum but it does not infer that it is subatomic particle because energized particle or wave can also travel through vacuum. Hence, the option (b) is incorrect.

The attraction of the particle is towards the positively charged plate because electrons are negatively charged particles. Hence, the option (c) is incorrect.

Thomson found the charge-to-mass ratio of particle but not charge from the oil drop experiment. Hence, the option (d) is incorrect.

Conclusion:

The main evidence that convinced Thomson is that he had discovered a subatomic particle; the electron is the charge-to-mass ratio was the same for all materials.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 8, Problem 1AC

To determine

The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options:

The charge-to-mass ratio was same for all materials.

Cathode rays could move through a vacuum.

Electrons were attracted toward a negatively charged plate.

The charge was always 1.60 × 10−19 coulomb.

Expert Solution & Answer

Answer to Problem 1AC

Solution:

Option (a) is the correct answer.

Explanation of Solution

Introduction:

J.J Thomson performed an experiment of cathode rays and observed the green phosphorescence when these rays are passed under high magnetic and electric field in a high vacuum tube. This observation leads very interesting fact that the particles which comes out from the cathode rays were attracted towards the anode terminal or the positive terminal.

High vacuum tube filled with the inert gas provides the inert free medium for a particle to move inside the tube.

On the introduction of the magnetic field, the charge gets deflected. This is due to the magnetic force applied on the moving charge. This confirmed that the particle has some charge.

Explanation:

Reason for the correct option:

As the charge to the mass ratio of the particle is calculated. It is initially presumed it might depend upon the velocity of the particle or the intensity of the magnetic field. Thus, the velocity and magnetic field intensity also changed but the charge to mass ratio of the particle remains the same. This leads for the search of the source of the particle whether it is observed due to the gas filled inside the chamber or the cathode material. When both the material of the cathode and the gas filled was changed, then also the charge to the mass ratio remains unchanged.

This confirms the possibility subatomic particle which does not depend upon the material of the metal or cathode or the magnetic field. The charge to mass ratio of the particle will always remain constant for all materials.

Thus, the particle named as electron and its charge to mass ratio em is approximately equal to:

em=1.7×107

Hence option (a), is correct.

Reason for the incorrect options:

Cathode ray can travel through the vacuum but it does not infer that it is subatomic particle because energized particle or wave can also travel through vacuum. Hence, the option (b) is incorrect.

The attraction of the particle is towards the positively charged plate because electrons are negatively charged particles. Hence, the option (c) is incorrect.

Thomson found the charge-to-mass ratio of particle but not charge from the oil drop experiment. Hence, the option (d) is incorrect.

Conclusion:

The main evidence that convinced Thomson is that he had discovered a subatomic particle; the electron is the charge-to-mass ratio was the same for all materials.

Answer 6

Chapter 8, Problem 1AC

To determine

The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options:

The charge-to-mass ratio was same for all materials.

Cathode rays could move through a vacuum.

Electrons were attracted toward a negatively charged plate.

The charge was always 1.60 × 10−19 coulomb.

Expert Solution & Answer

Answer to Problem 1AC

Solution:

Option (a) is the correct answer.

Explanation of Solution

Introduction:

J.J Thomson performed an experiment of cathode rays and observed the green phosphorescence when these rays are passed under high magnetic and electric field in a high vacuum tube. This observation leads very interesting fact that the particles which comes out from the cathode rays were attracted towards the anode terminal or the positive terminal.

High vacuum tube filled with the inert gas provides the inert free medium for a particle to move inside the tube.

On the introduction of the magnetic field, the charge gets deflected. This is due to the magnetic force applied on the moving charge. This confirmed that the particle has some charge.

Explanation:

Reason for the correct option:

As the charge to the mass ratio of the particle is calculated. It is initially presumed it might depend upon the velocity of the particle or the intensity of the magnetic field. Thus, the velocity and magnetic field intensity also changed but the charge to mass ratio of the particle remains the same. This leads for the search of the source of the particle whether it is observed due to the gas filled inside the chamber or the cathode material. When both the material of the cathode and the gas filled was changed, then also the charge to the mass ratio remains unchanged.

This confirms the possibility subatomic particle which does not depend upon the material of the metal or cathode or the magnetic field. The charge to mass ratio of the particle will always remain constant for all materials.

Thus, the particle named as electron and its charge to mass ratio em is approximately equal to:

em=1.7×107

Hence option (a), is correct.

Reason for the incorrect options:

Cathode ray can travel through the vacuum but it does not infer that it is subatomic particle because energized particle or wave can also travel through vacuum. Hence, the option (b) is incorrect.

The attraction of the particle is towards the positively charged plate because electrons are negatively charged particles. Hence, the option (c) is incorrect.

Thomson found the charge-to-mass ratio of particle but not charge from the oil drop experiment. Hence, the option (d) is incorrect.

Conclusion:

The main evidence that convinced Thomson is that he had discovered a subatomic particle; the electron is the charge-to-mass ratio was the same for all materials.

Answer 7

Chapter 8, Problem 1AC

To determine

The evidence that convinced Thomson that he had discovered a subatomic particle, the electron is to be determined from the given options:

The charge-to-mass ratio was same for all materials.

Cathode rays could move through a vacuum.

Electrons were attracted toward a negatively charged plate.

The charge was always 1.60 × 10−19 coulomb.

Answer 8

Expert Solution & Answer

Answer to Problem 1AC

Solution:

Option (a) is the correct answer.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Introduction:

J.J Thomson performed an experiment of cathode rays and observed the green phosphorescence when these rays are passed under high magnetic and electric field in a high vacuum tube. This observation leads very interesting fact that the particles which comes out from the cathode rays were attracted towards the anode terminal or the positive terminal.

High vacuum tube filled with the inert gas provides the inert free medium for a particle to move inside the tube.

On the introduction of the magnetic field, the charge gets deflected. This is due to the magnetic force applied on the moving charge. This confirmed that the particle has some charge.

Explanation:

Reason for the correct option:

As the charge to the mass ratio of the particle is calculated. It is initially presumed it might depend upon the velocity of the particle or the intensity of the magnetic field. Thus, the velocity and magnetic field intensity also changed but the charge to mass ratio of the particle remains the same. This leads for the search of the source of the particle whether it is observed due to the gas filled inside the chamber or the cathode material. When both the material of the cathode and the gas filled was changed, then also the charge to the mass ratio remains unchanged.

This confirms the possibility subatomic particle which does not depend upon the material of the metal or cathode or the magnetic field. The charge to mass ratio of the particle will always remain constant for all materials.

Thus, the particle named as electron and its charge to mass ratio em is approximately equal to:

em=1.7×107

Hence option (a), is correct.

Reason for the incorrect options:

Cathode ray can travel through the vacuum but it does not infer that it is subatomic particle because energized particle or wave can also travel through vacuum. Hence, the option (b) is incorrect.

The attraction of the particle is towards the positively charged plate because electrons are negatively charged particles. Hence, the option (c) is incorrect.

Thomson found the charge-to-mass ratio of particle but not charge from the oil drop experiment. Hence, the option (d) is incorrect.

Conclusion:

The main evidence that convinced Thomson is that he had discovered a subatomic particle; the electron is the charge-to-mass ratio was the same for all materials.

Answer 12

Ch. 8 - Prob. 1AC Ch. 8 - Prob. 2AC Ch. 8 - Prob. 3AC Ch. 8 - 4. Millikan measured the charge on oil droplets...Ch. 8 - Prob. 5AC Ch. 8 - Prob. 6AC Ch. 8 - Prob. 7AC Ch. 8 - Prob. 8AC Ch. 8 - Prob. 9AC Ch. 8 - Prob. 10AC

Concept explainers

Answer to Problem 1AC

Explanation of Solution

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Chapter 8 Solutions