If numerical aperture of a microscope is increased, then its

Options

A. resolving power remanis constant
B. resolving power becomes zero
C. limit of resolution is decreased
D. limit of resolution is increased

Answer

C

Explanation

Resolving limit of microscope is given by
`RL=(lamda)/(2musinalpha)`
where, `musinalpha` is called numerical aperture [NA]
and `lamda` = wavelenghth of light.
`:.RL=(lamda)/(2(NA))`
Hence, if numerical aperture of a microscope is increased, then its limit of resolution is decreased.