The human eye has an approximate angular resolution of φ = 5.8 × 10 –4 rad and typical…
Physics · Class 12 · CBSE — Ray Optics & Optical Instruments
The human eye has an approximate angular resolution of φ = 5.8 × 10–4 rad and typical photoprinter prints a minimum of 300 dpi (dots per inch, 1 inch = 2.54 cm). At what minimal distance z should a printed page be held so that one does not see the individual dots?
- 14.5 cm
- 20.5 cm
- 29.5 cm
- 28 cm
Answer
(A) 14.5 cm
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