Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

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

Options:

Answer:

Solution:

We know,

$\frac{y}{D} \geq 1.22 \frac{λ}{d}$

$\Rightarrow D \leq \frac{y d}{1.22 λ}$

$= \frac{10^{- 3} \times 3 \times 10^{- 3}}{1.22 \times 5 \times 10^{- 7}}$

$= \frac{30}{6.1} = 5 m$

$∴ D_{\max} = 5 m$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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