power of lenses
Asked by chipree | 18th Jun, 2008, 11:05: PM
It is the reciprocal of the focal length of the lens. P =1/f.
If lens is convex then f is positive and power is also positive.
If lens is concave the f is negative and power is also negative.
Answered by | 21st Jun, 2008, 04:35: PM
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