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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the main difference between convex and concave lenses?
π‘ Hint: Think about their shape and how they handle light.
Question 2
Easy
What is the formula for magnification?
π‘ Hint: Consider height and distances.
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 converges light?
- Convex
- Concave
- Both
- Neither
π‘ Hint: Remember: Convex lenses are thicker in the middle.
Question 2
True or False: Concave lenses can form real images.
- True
- False
π‘ Hint: Think about how they diverge light.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A convex lens has a focal length of 30 cm. An object is placed 60 cm away from it. Calculate the image distance and describe the image.
π‘ Hint: Donβt forget sign conventions in your calculations!
Question 2
If a concave lens produces a virtual image at a distance of -20 cm when an object is placed at -10 cm, calculate the focal length.
π‘ Hint: Remember to pay attention to signs for the distances.
Challenge and get performance evaluation