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 mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is refraction?
💡 Hint: Think about how light behaves in water.
Question 2
Easy
What does the normal line represent?
💡 Hint: It's not related to temperature!
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 to light as it passes from air into glass?
- Bends towards the normal
- Bends away from the normal
- Remains straight
💡 Hint: Think about how light behaves in different densities.
Question 2
True or False: The angle of incidence is always equal to the angle of refraction.
- True
- False
💡 Hint: Consider the nature of the media.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A light ray traveling at an angle of incidence of 45° hits water (n=1.33). Calculate the angle of refraction.
💡 Hint: Use trigonometric identities to solve for sin(r).
Question 2
Explain how the design of sunglasses utilizes the principle of refraction.
💡 Hint: Think about how lenses shield and direct daylight.
Challenge and get performance evaluation