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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2017
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Q)

The ratio of resolving powers of an optical microscope for two wavelengths $\lambda_1 = 4000\; \mathring{A}$ and $\lambda_2 = 6000\;\mathring{A}$ is


( A ) 3 : 2
( B ) 9 : 4
( C ) 8 : 27
( D ) 16 : 81

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