question_answer

The ratio of resolving powers of an optical microscope for two wavelengths \[{{\lambda }_{1}}=4000\,\overset{o}{\mathop{A}}\,\] and \[{{\lambda }_{2}}=6000\,\overset{o}{\mathop{A}}\,\] is [NEET-2017]

A)  16 : 81            

B)       8 : 27

C)  9 : 4                

D)       3 : 2

Correct Answer: D

Solution :

[d] Resolving power