Question

2 different length are determined as 42.6+/_ 0.3 and 14.1+/_0.1. find the sum of the length and difference in the length​

Answer 1

Answer:

The power of length is defined as the reciprocal of its focal length in metres, or D=1/f, where D is the power in diopters and f is the focal length in metres.. The formula for surface power is Ds= (u-1)/r, where u is the index of refraction r the radius of curvature in metres.

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