The limit of resolution of an oil immersion objective microscope of numerical aperture 0.8 for light of…

The limit of resolution of an oil immersion objective microscope of numerical aperture 0.8 for light of wavelength \(0.6 \mu \mathrm{m}\) is
  1. \(\frac{1.5}{8} \mu \mathrm{m}\)
  2. \(\frac{3}{8} \mu \mathrm{m}\)
  3. \(\frac{5}{8} \mu \mathrm{m}\)
  4. \(\frac{7}{8} \mu \mathrm{m}\)

Solution

Numerical aperture, \(N A=0.8\) Wavelength, \(\lambda=0.6 \mu \mathrm{m}\) \(\therefore\) Limit of resolution \(=\frac{\lambda}{2 N A}=\frac{0.6}{2 \times 0.8}=\frac{0.3}{0.8}=\frac{3}{8} \mu \mathrm{m}\)

Asked in: AP EAMCET 2020 (17 Sep Shift 1)

Practice more Optics questions on Aicharya