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
Define the incident ray.
💡 Hint: Think about what happens when light first contacts the medium.
Question 2
Easy
What is the normal in the context of refraction?
💡 Hint: Consider how this line relates to the incident ray.
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 does the first law of refraction state?
- The rays are parallel.
- The rays lie in the same plane.
- The rays never bend.
💡 Hint: Consider how the rays interact at the surface.
Question 2
True or False: The refractive index is dependent on the angle of incidence.
- True
- False
💡 Hint: Think about what the refractive index measures.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If light travels from air (n=1) into glass (n=1.5) at an angle of incidence of 30 degrees, find the angle of refraction.
💡 Hint: Rearranging Snell's law helps isolate sin r.
Question 2
Discuss how the refractive index affects the design of eyeglasses.
💡 Hint: Think about how optical properties minimize thickness and maximize vision quality.
Challenge and get performance evaluation