# Problem: A farsighted person has a near point of 62 cm rather than the normal 25 cm.What strength lens, in diopters, should be prescribed to correct this vision problem?Express your answer using two significant figures.P = _____ D

###### FREE Expert Solution

Lens equation:
$\overline{)\frac{\mathbf{1}}{{\mathbit{s}}_{\mathbit{o}}}{\mathbf{+}}\frac{\mathbf{1}}{{\mathbit{s}}_{\mathbit{i}}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbit{f}}}$

Power of a lens:

$\overline{){\mathbit{P}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{f}}}$

Object distance, so = 25 cm

Image distance, si = - 62 cm

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###### Problem Details

A farsighted person has a near point of 62 cm rather than the normal 25 cm.

What strength lens, in diopters, should be prescribed to correct this vision problem?