9.8 - SUMMARY
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Practice Questions
Test your understanding with targeted questions
Define reflection.
💡 Hint: Think of how light shines off a mirror.
What is the critical angle?
💡 Hint: It's important for total internal reflection!
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does Snell's Law describe?
💡 Hint: It has 'sine' in its equation.
The critical angle is the angle of incidence for which the refraction is 90°.
💡 Hint: Think about where total internal reflection occurs.
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Challenge Problems
Push your limits with advanced challenges
If a beam of light enters water at an angle of 30 degrees, calculate the angle of refraction if the refractive index of water is 1.33.
💡 Hint: Use the sine function for calculations.
A concave lens forms an image 10 cm from the lens while the object is 30 cm away. What is the focal length of the lens?
💡 Hint: Rearrange to find f.
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Reference links
Supplementary resources to enhance your learning experience.