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 is the angle of reflection equal to?
💡 Hint: Think about the law of reflection.
Question 2
Easy
State Fermat's principle in your own words.
💡 Hint: Consider the significance of time.
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
According to Snell’s Law, what does $$ n_1 \sin(i) $$ equal to?
- n_2 sin(r)
- v_1 v_2
- u + v
💡 Hint: Remember the relationship between the angles.
Question 2
True or False: Light bends towards the normal when it enters a denser medium.
- True
- False
💡 Hint: Think about what happens to light speed.
Solve 3 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A beam of light enters from air to glass at an angle of 45 degrees. If the index of refraction of glass is 1.5, calculate the angle of refraction.
💡 Hint: Apply Snell’s Law carefully, remember to handle the sin function.
Question 2
A concave mirror has a focal length of 20 cm. An object is placed 30 cm away from the mirror. Using the mirror equation, find the position of the image.
💡 Hint: Don’t forget the sign convention based on object placement.
Challenge and get performance evaluation