Question

RELATION BETWEEN POWER OF LENS AND FOCAL LENGTH

Answer 1

Optical power (also referred to as dioptric power, refractive power, focusing power, or convergence power) is the degree to which a lens, mirror, or other optical system converges or diverges light. It is equal to the reciprocal of the focal length of the device: P = 1/f.

Answer 2

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Power of a Lens. The power of a lens is its ability to bend light – the greater the power the greater the refraction of light. The power of a lens is also related to the focal length by the following formula: Power of a lens is measured in Dioptres (D).

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