The ratio of resolving powers of an optical microscope for two wavelengths λ 1 = 4000 Å and λ 2 = 6000 Å is

The ratio of resolving powers of an optical microscope for two wavelengths

λ_{1} = 4000 Å

and

λ_{2} = 6000 Å

is

$8 : 27$
$9 : 4$
$3 : 2$
$16 : 81$

Solution

Resolving power

\propto \frac{1}{λ}

\frac{R_{1}}{R_{2}} = \frac{λ_{2}}{λ_{1}}

= \frac{6000 Å}{4000 Å}

= \frac{3}{2}

Asked in: NEET 2017

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