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Question

How can resolving power of the instrument be increased?

A
use UV light
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B
immerse in oil
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C
use IR light
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D
use one more lens.
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Solution

The correct options are
A use UV light
B immerse in oil
Resolving power for the instrument is found to be μsinθ0.61λ , UV light has short wavelength, hence higher resolving power. Oil is optically denser than air, that is, its μ is greater than that of air. Thus immersing in oil would increase the resolving power.

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