write the unit of power of the lens
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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.
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Hey mate here is it answer
Write the nature and power of the lens. Power of lens is defined as the reciprocal of the focal length of the lens expressed in meter. SI unit of power is Dioptre denoted by D. Since the focal length is positive, so it is a convex lens...
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