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State the formula, lens formula and power of lens.

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State the formula, lens formula and power of lens.

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CBSE/Class 10/Science Tuition/Class IX-X Tuition

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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... read more
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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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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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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P=1/f
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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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