State the formula, lens formula and power of lens.

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Rajiv Singh

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The diopter is the unit of measure for the refractive power of a lens. The power of a lens is defined as the reciprocal of its focal length in meters, or D = 1/f, where D is the power in diopters and f is the focal length in meters. Lens surface power can be found with the index of refraction and radius...
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The diopter is the unit of measure for the refractive power of a lens. The power of a lens is defined as the reciprocal of its focal length in meters, or D = 1/f, where D is the power in diopters and f is the focal length in meters. Lens surface power can be found with the index of refraction and radius of curvature. read less
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1/v - 1/u = 1/f v = distance of image from centre of lens u = distance of object from centre of lens f = focal length of the lens Power = 1/f
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Power of lens = 1/ focal length (f) Lens Formula - 1/v - 1/u = 1/f v = distance of image from lens centre (o) u = distance of object from lens centre (o)
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Lens formula 1\f=1\v -1\u Where v is image distance. u is object distance.f is focal length.The power of lens is given by formula P=1\f where f is focal length.
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P=1/f
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