Loose Leaf for Physical Science
Loose Leaf for Physical Science
11th Edition
ISBN: 9781259602009
Author: Tillery, Bill W
Publisher: McGraw-Hill Education
bartleby

Concept explainers

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:

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

  2. Cathode rays could move through a vacuum.

  3. Electrons were attracted toward a negatively charged plate.

  4. The charge was always 1.60×1019coulomb.

Expert Solution & Answer
Check Mark

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.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Look up the values of the quantities in aB = h2 / 4π2 me kqe2 ,and verify that the Bohr radius aB is 0.529 x 10-10 m .
What is the magnitude of the electric field at a distance of 0.1 nm from a thorium nucleus? I have tried 2.304E-8 and 2.07E-6 and they are both wrong
A helium ion has one electron in the n=2 orbital. How much energy is necessary to liberate the final electron from this ion?   a) 13.6 eV   b) 18.1 eV   c) 27.2 eV   d) 54.4 eV   e) None of the other responses are correct.

Chapter 8 Solutions

Loose Leaf for Physical Science

Ch. 8 - Prob. 11ACCh. 8 - Prob. 12ACCh. 8 - Prob. 13ACCh. 8 - Prob. 14ACCh. 8 - Prob. 15ACCh. 8 - Prob. 16ACCh. 8 - Prob. 17ACCh. 8 - Prob. 18ACCh. 8 - Prob. 19ACCh. 8 - Prob. 20ACCh. 8 - Prob. 21ACCh. 8 - Prob. 22ACCh. 8 - Prob. 23ACCh. 8 - Prob. 24ACCh. 8 - Prob. 25ACCh. 8 - Prob. 26ACCh. 8 - 27. Elements that have properties of both the...Ch. 8 - Prob. 28ACCh. 8 - Prob. 29ACCh. 8 - Prob. 30ACCh. 8 - Prob. 31ACCh. 8 - Prob. 32ACCh. 8 - Prob. 33ACCh. 8 - Prob. 34ACCh. 8 - Prob. 35ACCh. 8 - Prob. 36ACCh. 8 - Prob. 37ACCh. 8 - Prob. 38ACCh. 8 - Prob. 39ACCh. 8 - Prob. 40ACCh. 8 - Prob. 41ACCh. 8 - Prob. 42ACCh. 8 - Prob. 43ACCh. 8 - Prob. 44ACCh. 8 - Prob. 45ACCh. 8 - Prob. 46ACCh. 8 - Prob. 47ACCh. 8 - Prob. 48ACCh. 8 - Prob. 49ACCh. 8 - Prob. 1QFTCh. 8 - Prob. 2QFTCh. 8 - Prob. 3QFTCh. 8 - Prob. 4QFTCh. 8 - Prob. 5QFTCh. 8 - Prob. 6QFTCh. 8 - Prob. 7QFTCh. 8 - Prob. 8QFTCh. 8 - Prob. 9QFTCh. 8 - Prob. 10QFTCh. 8 - Prob. 11QFTCh. 8 - Prob. 12QFTCh. 8 - Prob. 1FFACh. 8 - Prob. 2FFACh. 8 - Prob. 3FFACh. 8 - Prob. 4FFACh. 8 - Prob. 5FFACh. 8 - Prob. 6FFACh. 8 - Prob. 1PEBCh. 8 - Prob. 2PEBCh. 8 - Prob. 3PEBCh. 8 - Prob. 4PEBCh. 8 - Prob. 5PEBCh. 8 - 6. If the charge-to-mass ratio of a proton is 9.58...Ch. 8 - Prob. 7PEBCh. 8 - 8. Using any reference you wish, write the...Ch. 8 - Prob. 9PEBCh. 8 - 10. Referring to Figure 8.16 only, write the...Ch. 8 - 11. An electric motor draws a current of 11.5 A in...Ch. 8 - Prob. 12PEBCh. 8 - Prob. 13PEBCh. 8 - Prob. 14PEBCh. 8 - Prob. 15PEBCh. 8 - Prob. 16PEBCh. 8 - Prob. 17PEBCh. 8 - Prob. 18PEBCh. 8 - Prob. 19PEB
Knowledge Booster
Physics
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
    Recommended textbooks for you
  • University Physics Volume 3
    Physics
    ISBN:9781938168185
    Author:William Moebs, Jeff Sanny
    Publisher:OpenStax
    Modern Physics
    Physics
    ISBN:9781111794378
    Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
    Publisher:Cengage Learning
    Intro Spectroscopy
    Physics
    ISBN:9781305221796
    Author:PAVIA
    Publisher:Cengage
  • Principles of Physics: A Calculus-Based Text
    Physics
    ISBN:9781133104261
    Author:Raymond A. Serway, John W. Jewett
    Publisher:Cengage Learning
    An Introduction to Physical Science
    Physics
    ISBN:9781305079137
    Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
    Publisher:Cengage Learning
  • University Physics Volume 3
    Physics
    ISBN:9781938168185
    Author:William Moebs, Jeff Sanny
    Publisher:OpenStax
    Modern Physics
    Physics
    ISBN:9781111794378
    Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
    Publisher:Cengage Learning
    Intro Spectroscopy
    Physics
    ISBN:9781305221796
    Author:PAVIA
    Publisher:Cengage
    Principles of Physics: A Calculus-Based Text
    Physics
    ISBN:9781133104261
    Author:Raymond A. Serway, John W. Jewett
    Publisher:Cengage Learning
    An Introduction to Physical Science
    Physics
    ISBN:9781305079137
    Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
    Publisher:Cengage Learning