The human eye has an approximate angular resolution of θ = 5.8 × 1 0 − 4 rad and typical photo printer prints a minimum of 300 dip (dots per inch, 1 inch = 2.54 cm ). At what minimal distance d should

Question

The human eye has an approximate angular resolution of $θ = 5.8 \times 1 0^{- 4} rad$ and typical photo printer prints a minimum of 300 dip (dots per inch, 1 inch $= 2.54 cm$ ). At what minimal distance $d$ should a printed page be held so that one does not see the individual dots?

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Answer:

C

Solution:

$θ = \frac{x}{d}$ $5.8 \times 1 0^{- 4} = \frac{2.54}{300} \times \frac{1}{d}$ $d = 14.59 cm$

TestHub · Accepted Answer

θ = d x ​ 5.8 × 1 0 − 4 = 300 2.54 ​ × d 1 ​ d = 14.59 cm

Physics - Geometrical Optics Question with Solution | TestHub

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