Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
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 related to the topic.
Question 1
Easy
What does the photoelectric effect describe?
💡 Hint: Think about electron behavior with light.
Question 2
Easy
Explain the significance of threshold frequency.
💡 Hint: Remember how different metals behave with light.
Practice 1 more question and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
Who discovered the photoelectric effect?
- Einstein
- Hallwachs
- Lenard
💡 Hint: Consider the scientist known for working with metals and light.
Question 2
True or False: Different metals have the same threshold frequency.
- True
- False
💡 Hint: Think about zinc versus alkali metals.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have a piece of metal with a threshold frequency of 5 × 10^14 Hz. Will this metal emit electrons when exposed to light of frequency 6 × 10^14 Hz?
💡 Hint: Compare the frequencies.
Question 2
Explain why higher frequency light will emit electrons with greater kinetic energy compared to lower frequency light.
💡 Hint: Refer to the relationship between frequency and energy.
Challenge and get performance evaluation