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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the primary function of a convex lens?
๐ก Hint: Think about how a magnifying glass works.
Question 2
Easy
What type of lens is used to correct nearsightedness?
๐ก Hint: Remember the shape of the lens!
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 a convex lens considered?
- Diverging
- Converging
- Neutral
๐ก Hint: Think about how they gather light.
Question 2
True or False: Concave lenses create real images.
- True
- False
๐ก Hint: Consider what happens when light passes through them.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a convex lens produces a virtual image that is twice the size of the object, with the object located 10 cm from the lens, what is the lens' focal length?
๐ก Hint: Consider negative values for virtual images.
Question 2
Two different concave lenses create an effective focal length of -30 cm when combined. If one lens has a focal length of -20 cm, what is the focal length of the other lens?
๐ก Hint: Remember to factor in the signs of the focal lengths when combining lenses.
Challenge and get performance evaluation