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Asked in NEET 2017 · Resolving power and limits of ray optics
Given: λ₁=4000 A and λ₂=6000 A, same microscope.
Idea: resolving power is the reciprocal of the smallest resolvable separation, and that separation is proportional to the wavelength.
RP∝1/λ.
(RP₁)/(RP₂)=(λ₂)/(λ₁)=(6000)/(4000).
=3/2.
The shorter wavelength resolves better, which is why blue light sharpens a microscope image.
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