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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the focal length of a convex lens if the image distance is 15 cm and the object distance is 10 cm?
💡 Hint: Use the lens formula.
Question 2
Easy
What type of lens is known as a diverging lens?
💡 Hint: Think about how it behaves with light.
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 focal length of a convex lens producing an image at 25 cm when the object is at 50 cm?
💡 Hint: Consider the lens formula.
Question 2
True or False: A concave lens always creates real images.
💡 Hint: Remember the types of images produced by concave lenses.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A researcher places an object 20 cm in front of a convex lens with a focal length of 5 cm. Calculate the image location and characteristics.
💡 Hint: Use the lens formula to find the solution.
Question 2
A student experiments with a concave lens and places an object at 12 cm. If the focal length is -8 cm, where will the image be formed?
💡 Hint: Remember the sign conventions for concave lenses.
Challenge and get performance evaluation