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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the lens formula?
π‘ Hint: Recall the relationship between focal length, image, and object distances.
Question 2
Easy
What does magnification indicate?
π‘ Hint: Consider the sizes of the image and object.
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 does the lens formula express?
- Relationship between distances
- Color blending
- Image sharpness
π‘ Hint: Think about the use of lenses in optics.
Question 2
The power of a lens is inversely related to its focal length. True or False?
- True
- False
π‘ Hint: Consider how power is defined mathematically.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A lens produces a virtual image that is twice the height of the object being viewed. If the object is placed 10 cm away from the lens, what is the distance to the lens required to produce this image?
π‘ Hint: Remember the characteristics of virtual images.
Question 2
A lens has a focal length of 15 cm. If an object is placed 30 cm from the lens, where will the image be located?
π‘ Hint: Use the formula clearly and track the signs carefully.
Challenge and get performance evaluation