11.1 - INTRODUCTION
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the photoelectric effect?
💡 Hint: Think about how light interacts with a surface!
Who discovered the electron?
💡 Hint: Remember the name associated with cathode ray experiments.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What established the wave nature of light?
💡 Hint: Consider who formulated the equations governing electric and magnetic fields.
True or False: Electrons can be emitted from a metal surface under any light frequency.
💡 Hint: Think about the conditions required for electron emission.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
Consider that in an experiment, a metal surface can emit electrons if illuminated with light of frequency 5 × 10^14 Hz. If the work function for this metal is 2 eV, calculate the maximum kinetic energy of the emitted electrons.
💡 Hint: First calculate the photon energy and then use it in the kinetic energy formula.
If a certain metal exhibits photoelectric emission at a threshold frequency of 7.5 × 10^14 Hz, determine whether a light of frequency 6 × 10^14 Hz will result in electron emission.
💡 Hint: Compare the incident light frequency with the threshold frequency.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.