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The human eye has an approximate angular...

The human eye has an approximate angular resolution of `phi = 5.8xx10^(-4)` rad and a typical photo printer prints a minimum of 300 dpi (dots per inch, `= 2.54 cm`). Aminimum distance 'z' should a printed page be held so that one doesnot see the indivdual dots is ______ .

A

`14.5 cm`

B

`145 cm`

C

`14.5 m`

D

`145m`

Text Solution

Verified by Experts

The correct Answer is:
A
Linear distance between two dots
`l = (2.54)/(300) = 0.84xx10^(-2)cm`
`z= (1)/(phi) = (0.84xx10^(-2))/(5.8xx10^(-4))= 14.5 cm`
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