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
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is population inversion in the context of lasers?
💡 Hint: Think of the state of atoms in a laser medium.
Question 2
Easy
What type of laser uses carbon dioxide as a gain medium?
💡 Hint: It is widely used for cutting and welding applications.
Practice 3 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 effect does population inversion have on lasing?
- Increases efficiency
- Decreases efficiency
- No effect
💡 Hint: Think about the conditions necessary for a laser to operate.
Question 2
Is Brewster's angle relevant for maximizing laser transmission?
- True
- False
💡 Hint: Consider the purpose of Brewster’s angle in optics.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a laser that operates with a population inversion of 1000 atoms. If 10% are flipped to the excited state, how many atoms remain in the ground state?
💡 Hint: Calculate based on the total number of atoms.
Question 2
A laser emits 5 × 10^6 photons per second, each with an energy of 1.5 eV. What is the total power output?
💡 Hint: Convert eV to watts if needed.
Challenge and get performance evaluation