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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the definition of a convex lens?
💡 Hint: Think about how these lenses are shaped and the light behavior.
Question 2
Easy
What does the optical center of a lens refer to?
💡 Hint: Consider where light enters without changing direction.
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 type of lens is thicker in the middle?
- Concave
- Convex
- Flat
💡 Hint: Remember the shape of each lens type.
Question 2
True or False: A concave lens can create real images.
- True
- False
💡 Hint: Think about the ray diagrams of concave lenses.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A convex lens with a focal length of 15 cm forms an image 30 cm from the lens. Where is the object located?
💡 Hint: Remember to rearrange the lens formula appropriately.
Question 2
If a concave lens creates a virtual image at a distance of -20 cm with an object placed at -10 cm, find the focal length.
💡 Hint: Make sure to account for the signs of the distances correctly.
Challenge and get performance evaluation