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3 cards from this section. Quick, good the night before a test.
What is the definition of a convex lens?
Think about how these lenses are shaped and the light behavior.
What does the optical center of a lens refer to?
Consider where light enters without changing direction.
What type of lens is thicker in the middle?
Remember the shape of each lens type.
True or False: A concave lens can create real images.
Think about the ray diagrams of concave lenses.
A convex lens with a focal length of 15 cm forms an image 30 cm from the lens. Where is the object located?
Remember to rearrange the lens formula appropriately.
If a concave lens creates a virtual image at a distance of -20 cm with an object placed at -10 cm, find the focal length.
Make sure to account for the signs of the distances correctly.
6 more questions in this section. Enroll free to practise them all.
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