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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens to a ray parallel to the principal axis when it hits a convex lens?
💡 Hint: Think about where the light concentrates.
Question 2
Easy
Define a concave lens.
💡 Hint: How does it shape 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 is the focal point of a convex lens?
- The point where light diverges
- The point where parallel rays converge
- The point where rays pass straight
💡 Hint: Think about how light rays interact after passing through.
Question 2
True or False: A ray parallel to the principal axis in a concave lens diverges upon refraction.
- True
- False
💡 Hint: Recall the properties of light as it encounters concave lenses.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Analyze a scenario where an object is moved closer to a convex lens. Predict how the image distance changes and illustrate with a ray diagram.
💡 Hint: Remember the rules of ray diagrams as you draw.
Question 2
A concave lens has a focal length of -5 cm. Determine the image location for an object located 10 cm from the lens using the lens formula.
💡 Hint: Use the lens formula carefully with proper sign conventions.
Challenge and get performance evaluation