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Two point white dots are 1mm apart on a ...

Two point white dots are 1mm apart on a black paper. They are viewed by eye of pupil diameter 3mm. Approximately, what is the maximum distance at which these dits can be resolved by the eye? [Take wavelelngth of light =500nm]

A

`6m`

B

`3m`

C

`5m`

D

`1m`

Text Solution

Verified by Experts

The correct Answer is:
3
we know `(y)/(D)ge1.22 (lambda)/(2)`
`rArr Dle(yD)/(1.22lambda)`
`:.(10^(-1)xx3xx10^(-3))/(1.22xx5xx10^(-7))`
`D_(max)=5m`
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