Concept explainers
(a) To determine:
The value of Planck’s constant
Answer to Problem 28P
Solution:
The value of Planck’s constant is .
Explanation of Solution
Given:
Table of incident frequency and energy of ejected electron
Frequency(1014 Hz) | Energy (eV) |
---|---|
11.8 | 2.60 |
10.6 | 2.11 |
9.9 | 1.81 |
9.1 | 1.47 |
8.2 | 1.10 |
6.9 | 0.57 |
Calculation:
The graph between Energy and frequency is given as follows
Now using the first value the equation of energy of electron is given as
…… (1)
Now using the second value the equation of energy of electron is given as
…… (2)
Subtracting Eq. (1)with Eq. (2)
(b) To determine:
The cutoff frequency of the sodium.
Answer to Problem 28P
Solution:
The cutoff frequency of the sodium .
Explanation of Solution
The cut off frequency is the frequency at which the energy of the electron is 0
Consider the Eq. (1)
Plugging the value of Planck’s constant
Now the cutoff frequency is calculated as
Plugging the values in the above equation
Thus, the cutoff frequency is .
(c) To determine:
Work function of the sodium
Answer to Problem 28P
Solution:
Work function of the sodium is .
Explanation of Solution
Consider the Eq. (1)
Plugging the value of Planck’s constant
Chapter 27 Solutions
Physics: Principles with Applications
Additional Science Textbook Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
Life in the Universe (4th Edition)
Physics for Scientists and Engineers with Modern Physics
University Physics Volume 1
Conceptual Integrated Science
College Physics: A Strategic Approach (3rd Edition)
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON