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 is refraction?
💡 Hint: Think about how light behaves when it enters water.
Question 2
Easy
Describe how apparent depth works.
💡 Hint: Recall the example of a straw in a glass of water.
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 causes light to bend when it moves from air to water?
- It slows down
- It speeds up
- It stays the same
💡 Hint: Think about how different materials affect light speed.
Question 2
True or False: Objects submerged in water always look deeper than they are.
- True
- False
💡 Hint: Recall the example of the spoon in a glass of water.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a light ray travels from air to water at a 30-degree angle of incidence, calculate the angle of refraction in water (Refractive index of water = 1.33).
💡 Hint: Remember n stands for the refractive index!
Question 2
You have a prism that separates light into red, green, and blue. If the red light bends the least, explain why this occurs.
💡 Hint: Think about the color spectrum and wavelength!
Challenge and get performance evaluation