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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the photoelectric effect?
💡 Hint: Think about how light interacts with metals.
Question 2
Easy
Define threshold frequency.
💡 Hint: What is necessary for electrons to be released?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What happens when light below the threshold frequency hits a metal surface?
- Electrons are emitted
- No electrons are emitted
💡 Hint: Think about the specific frequency needed.
Question 2
The energy of a photon is directly proportional to its frequency.
- True
- False
💡 Hint: Consider the equation involving frequency.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An electron in a metal absorbs a photon of frequency 7.5 × 10¹⁴ Hz. If the work function of the metal is 2.5 eV, determine the maximum kinetic energy of the emitted electron.
💡 Hint: Convert frequency to energy using Planck's constant.
Question 2
Consider a photon having an energy of 10 eV hitting a surface with a work function of 5 eV. What is the kinetic energy of the emitted electron?
💡 Hint: Simple subtraction afterwards will help you find K_max.
Challenge and get performance evaluation