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

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Question: Answered & Verified by Expert

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

λ_{1} = 4000 Å

and

λ_{2} = 6000 Å

is

PhysicsRay OpticsNEETNEET 2017

Options:

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

Solution:

1059 Upvotes Verified Answer

The correct answer is:

3 : 2

Resolving power

\propto \frac{1}{λ}

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

= \frac{6000 Å}{4000 Å}

= \frac{3}{2}

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