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Science exam lenses
Using lenses to form images
| Question | Answer |
|---|---|
| Concave lens | lens thinner in the middle than at the edges |
| convex lens | lens thicker in the middle than at the edges |
| diverge | light rays go out |
| converge | light rays come together |
| if parallel light rays are shone on a concave lens, they will refract so that they ________ | diverge |
| on a concave lens, the image is always _____________ and ____________ than the object | upright and smaller |
| concave lenses are used in eyeglasses for _____sighted people | near |
| if parallel light rays are shone on a convex lens, they will refract so that they _______ | converge |
| on a convex lens, if the object is far away from the lens, the image will be ________ and __________ than the object | upside down and smaller |
| on a convex lens, if the object is 1-2 focal lengths, the image is __________ than the object (still ____________ - upside down or upright) | bigger, upside down |
| for a convex lens, if the object is closer to the lens than 1 focal length, the image is _______ and ______ than the object | upright and larger |
| convex lenses are used in: | reading glasses, magnifying glasses, telescopes, microscopes, binoculars, and cameras |
Created by:
jlarose
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