3.1 - Millikan’s Experiment
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 metal surfaces.
What is stopping potential?
💡 Hint: It’s related to the emitted electrons' movement.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the photoelectric effect demonstrate about light?
💡 Hint: Think about how we can observe both characteristics in experiments.
True or False: The intensity of light affects the kinetic energy of emitted electrons.
💡 Hint: Recall how intensity interacts with the number of emitted electrons.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
An electron is emitted with a stopping potential of 2V when illuminated with light of frequency 5 x 10^14 Hz. Calculate its maximum kinetic energy in joules given that the charge of an electron is 1.6 x 10^-19 C.
💡 Hint: Substitute the values carefully and remember units.
If the work function of a material is 4.5 eV, what is the threshold frequency? Convert your final answer to Hz.
💡 Hint: Keep track of unit conversions carefully.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.
- Millikan’s Experiment - Wikipedia
- Understanding the Photoelectric Effect - Khan Academy
- Particle Nature of Light - HyperPhysics
- Quantum Mechanics and the Photoelectric Effect - MIT OpenCourseWare
- Photoelectric Effect - Explanation and Experiments - Physics Classroom
- Interactive Photoelectric Effect Simulation - PhET
- E = hν and the Photoelectric Effect - University of Colorado Boulder