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The power of a lens is +4D. What is the nature of lens

MEREK : power 4d

The power of a lens is +4D. What is the nature of lens

power 4dPower 4D . 4D-BIMBIMOptical power is also referred to as dioptric power, convergence power, refractive power, or refractive power. It is equal to P = 1 f. Dioptre Formula . The Dioptre formula is used to

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