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2 cards from this section. Quick, good the night before a test.
Define a convex lens.
Think about the shape and function of the lens.
What is the principal axis in a lens?
Consider the central reference line of the lens.
What type of lens is thicker in the middle and converges light rays?
Think about curvature.
True or False: A concave lens always forms real images.
Remember the properties of the images formed by different lens types.
If a convex lens has a focal length of 10 cm, where will the image form when the object is 30 cm away?
Apply the lens formula and remember to use the correct signs.
Explain how you would obtain a virtual image using a concave lens and a specific object placement.
Consider the interaction of diverging rays.
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