4.3 - Laws of Refraction
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
Define the incident ray.
💡 Hint: Think about what happens when light first contacts the medium.
What is the normal in the context of refraction?
💡 Hint: Consider how this line relates to the incident ray.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the first law of refraction state?
💡 Hint: Consider how the rays interact at the surface.
True or False: The refractive index is dependent on the angle of incidence.
💡 Hint: Think about what the refractive index measures.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
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.
Discuss how the refractive index affects the design of eyeglasses.
💡 Hint: Think about how optical properties minimize thickness and maximize vision quality.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.