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7 Cards in this Set
- Front
- Back
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define convex lenses |
converges parallel rays to a focus, at the focal length |
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define concave lenses |
diverge parallel rays that appear to come from the virtual focal point |
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define focal point |
the point where rays incident on the lens |
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define diverging lens |
lens that spread the light apart |
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define virtual focus |
the same as a focus but on the side of the object |
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define focal length |
the distance from the centre of a lens to its focal point |
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in 1/f = 1/u + 1/v, what does the f,u and v mean? |
f: focal length u: distance between object and lens axis v: distance between image and lens axis |
