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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens to light when it moves from air to water?
💡 Hint: Think about how light travels in different substances.
Question 2
Easy
Define refraction in your own words.
💡 Hint: How does changing materials impact light?
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 occurs when light passes into a denser medium?
- It speeds up
- It slows down
- It remains unchanged
💡 Hint: Consider light's behavior as it travels through different densities.
Question 2
True or False: Concave lenses are used to correct farsightedness.
- True
- False
💡 Hint: Remember which types of lenses correspond to vision problems.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a light ray enters a medium with a higher refractive index from air, at an angle of 30 degrees to the normal, calculate the angle of refraction using Snell's Law if the refractive index of air is 1 and that of the new medium is 1.5.
💡 Hint: Use the sine function and ratios to find the angle.
Question 2
If a person is nearsighted and can only see objects clearly within 20 cm, suggest a lens type and describe how it corrects their vision.
💡 Hint: Think about how light needs to be adjusted for different distances.
Challenge and get performance evaluation