Homework Help is Here – Start Your Trial Now!
Science
Physics
The photoelectric effect is the emission of electrons from a metal when light falls on it. The maximum kinetic energy of the electrons is the photon energy less the work function of the metal. A counter-electrode placed near the surface can pick up the photoelectric current. a) The work function of copper is 4.65 eV. Calculate the maximum kinetic energy in eV of the electrons if a copper surface is illuminated with 200 nm UV light. b) If the counter-electrode is charged to +10 V, what will be the maximum kinetic energy of electrons arriving on it? What negative voltage would cut the photocurrent to zero?

The photoelectric effect is the emission of electrons from a metal when light falls on it. The maximum kinetic energy of the electrons is the photon energy less the work function of the metal. A counter-electrode placed near the surface can pick up the photoelectric current. a) The work function of copper is 4.65 eV. Calculate the maximum kinetic energy in eV of the electrons if a copper surface is illuminated with 200 nm UV light. b) If the counter-electrode is charged to +10 V, what will be the maximum kinetic energy of electrons arriving on it? What negative voltage would cut the photocurrent to zero?

Modern Physics
Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter3: The Quantum Theroy Of Light
Section: Chapter Questions
Problem 20P
See similar textbooks
icon
Related questions
Question
The photoelectric effect is the emission of electrons from a metal when light falls on it. The maximum kinetic energy of the electrons is the photon energy less the work function of the metal. A counter-electrode placed near the surface can pick up the photoelectric current. a) The work function of copper is 4.65 eV. Calculate the maximum kinetic energy in eV of the electrons if a copper surface is illuminated with 200 nm UV light. b) If the counter-electrode is charged to +10 V, what will be the maximum kinetic energy of electrons arriving on it? What negative voltage would cut the photocurrent to zero?
Transcribed Image Text:The photoelectric effect is the emission of electrons from a metal when light falls on it. The maximum kinetic energy of the electrons is the photon energy less the work function of the metal. A counter-electrode placed near the surface can pick up the photoelectric current. a) The work function of copper is 4.65 eV. Calculate the maximum kinetic energy in eV of the electrons if a copper surface is illuminated with 200 nm UV light. b) If the counter-electrode is charged to +10 V, what will be the maximum kinetic energy of electrons arriving on it? What negative voltage would cut the photocurrent to zero?
Expert Solution
steps

Step by step

Solved in 2 steps with 5 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
Modern Physics
Modern Physics
Physics
ISBN:
9781111794378
Author:
Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:
Cengage Learning
University Physics Volume 3
University Physics Volume 3
Physics
ISBN:
9781938168185
Author:
William Moebs, Jeff Sanny
Publisher:
OpenStax
Physics for Scientists and Engineers with Modern …
Physics for Scientists and Engineers with Modern …
Physics
ISBN:
9781337553292
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
College Physics
College Physics
Physics
ISBN:
9781285737027
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
Physics
ISBN:
9781133104261
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Glencoe Physics: Principles and Problems, Student…
Glencoe Physics: Principles and Problems, Student…
Physics
ISBN:
9780078807213
Author:
Paul W. Zitzewitz
Publisher:
Glencoe/McGraw-Hill
SEE MORE TEXTBOOKS