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  4. The ratio of resolving powers of an optical microscope for two wavelengths λ1 = 4000 mathring A and λ2 = 6000 mathring A is :

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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 :

NEETNEET 2017Wave Optics

Solution:

Resolving power $\propto \frac{1}{\lambda}$
$\frac{RP_1}{RP_2} = \frac{\lambda_2}{\lambda_2}$
$= \frac{6000 \mathring A}{4000 \mathring A}$
$= \frac{3}{2} $