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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is refraction?
💡 Hint: Think about what happens to light when it enters water.
Question 2
Easy
What does a higher index of refraction indicate?
💡 Hint: Consider how light behaves in different materials.
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 waves when they pass from one medium to another?
- They disappear
- They speed up and change direction
- They slow down and change direction
- They reflect completely
💡 Hint: Think about how light behaves in different materials.
Question 2
True or False: Light can reflect completely across a boundary when entering a medium with a lower index.
- True
- False
💡 Hint: Remember what we defined as the critical angle.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A light ray strikes water at a 45-degree angle. Calculate the angle of refraction in water, given that the indices of refraction are 1 for air and 1.33 for water.
💡 Hint: Remember to use the sine function for calculation.
Question 2
In a fiber optic cable made of glass (n = 1.5), what is the critical angle when light travels from glass to air (n = 1)?
💡 Hint: Think about how total internal reflection keeps light in.
Challenge and get performance evaluation