lens
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Resources
PhET: Geometric Optics: Basics
How does a lens or mirror form an image? See how light rays are refracted by a lens or reflected by a mirror. Observe how the image changes when you adjust the focal length, move the object, or move the screen.
Resource
PhET: Geometric Optics
How does a lens or mirror form an image? See how light rays are refracted by a lens or reflected by a mirror. Observe how the image changes when you adjust the focal length of the lens, move the object, or move the screen.
Resource