Optics Question 881

Question: Assuming human pupil to have a radius of 0.25 cm and a comfortable viewing distance of 25 cm, the minimum separation between two objects that human eye can resolve at 500 nm wavelength is:

Options:

A) 100μm

B)  300μm

C) 1μm

D)  30μm

Show Answer

Answer:

Correct Answer: D

Solution:

[d] sinθ=0.2525=1100 .

Resolving power =1.22λ2μsinθ=30μm .



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