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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define magnification in your own words.
💡 Hint: Think about comparing sizes.
Question 2
Easy
What is the formula for magnification in a lens?
💡 Hint: Remember the definitions of v and u.
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 formula for magnification in a convex lens?
- m = v/h
- m = v/u
- m = h'/h
💡 Hint: Focus on the variables related to object and image.
Question 2
Magnification can be negative for mirrors. True or False?
- True
- False
💡 Hint: Think about how images are reflected in mirrors.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A telescope's objective lens has a focal length of 400 cm, and its eyepiece has a focal length of 10 cm. What is the total magnification of the telescope?
💡 Hint: Use the focal lengths of the lenses.
Question 2
A converging lens is placed to focus on an object 15 cm away, which yields a clear image that is twice the size of the object. What is the image distance?
💡 Hint: Recall the image is twice the size of the object for magnification.
Challenge and get performance evaluation