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 does Fermat's Principle state?
💡 Hint: Think about paths and time.
Question 2
Easy
What is the angle of incidence?
💡 Hint: Normal is the imaginary line perpendicular to the surface.
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 Fermat's Principle state?
- Light travels the fastest path
- Light travels the shortest distance
- Light travels the path of least time
💡 Hint: Think about how light behaves in different situations.
Question 2
True or False: The angle of reflection is always equal to the angle of incidence.
- True
- False
💡 Hint: Visualize a mirror.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Suppose light travels from air (n=1.0) into glass (n=1.5) at an angle of incidence of 30 degrees. Calculate the angle of refraction.
💡 Hint: Find sin(30) and use it in the equation.
Question 2
If a mirage is observed on a hot road, describe how Fermat’s Principle defines the light's path to create this illusion.
💡 Hint: Focus on the refractive index variations caused by temperature gradients.
Challenge and get performance evaluation