When reading the printout from a laser printer, you are actually looking at an array of tiny dots.
If the pupil of your eye is 4.2 mm in diameter when reading a page held 29 cm from your eye, what is the minimum separation of adjacent dots that can be resolved? (Assume light with a wavelength of 500 nm , and use 1.36 as the index of refraction for the interior of the eye.)
Express your answer using two significant figures.
Answers: 1
![y = [ \frac{1.22 * \lambda }{d_p * n_r } ]* d](/tpl/images/0784/6965/268a9.png)
![y = [ \frac{1.22 * 500 *10^{-9} }{4.2 *10^{-3} * 1.36} ]* 0.29](/tpl/images/0784/6965/cf677.png)
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